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Amusements in Mathematics
Amusements in Mathematics

Chapter XVII · Chapter 17

Chapter 17 of Amusements in Mathematics is here in full — 411 sentences across 83 reading sections, with audio for every sentence and word.

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Context Illustration Reading 1/82 · 5 lines
English subtitles · tap any word to listen 1 / 5
Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.
Also mark off the point G so that DG shall equal DC.
Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.
A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.
The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.
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AI-generated narration by OpenAI · Slow US English
LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

Amusements in Mathematics

Chapter XVII · Chapter 17

Chapter 17 of Amusements in Mathematics is here in full — 411 sentences across 83 reading sections, with audio for every sentence and word.

Reading 1/82 · 5 reading units · Lines 1–5

Line 1
Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.
Line 2
Also mark off the point G so that DG shall equal DC.
Line 3
Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.
Line 4
A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.
/ə ˈkjʊriəs pɔɪnt ɪn kəˈnekʃən wɪð ðɪs ˈprɑːbləm ɪz ðə fækt ðæt ðə pəˈzɪʃən ʌv ðə pɔɪnt ə ɪz ˌɪndɪˈpendənt ʌv ðə saɪd ˌsiːˈdiː/
Line 5
The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.
/ðə ˈriːzən fɔːr ðɪs ɪz mɔːr ˈɑːbviəs ɪn ðə səˈluːʃən aɪ hæv ˈɡɪvən ðæn ɪn ˈeni ˈʌðər ˈmeθəd ðæt aɪ hæv siːn ənd ˌɔːlˈðoʊ ðə ˈprɑːbləm meɪ biː sɑːlvd wɪð ɔːl ðə ˈwɜːrkɪŋ ɑːn ðə ˈkɑːrdbɔːrd ðæt ɪz ˈpɑːrtli waɪ aɪ hæv prəˈfɜːrd ɪt/

Learner Dictionary

These definitions explain words found in the current reading and keep every example grounded in its original sentence.

Oxford-style entry order: headword, part of speech, US IPA, concise definition, contextual example, and audio.

cardboard noun US /ˈkɑːrdbɔːrd/

a stiff moderately thick paper

From this reading “The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.”

cuts noun US /kʌts/

plural of “cut” — a share of the profits

From this reading “Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.”

dotted adjective US /ˈdɑːtəd/

having a pattern of dots

From this reading “Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.”

obvious adjective US /ˈɑːbviəs/

easily perceived by the senses or grasped by the mind

From this reading “The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.”

parallel noun US /ˈperəlel/

something having the property of being analogous to something else

From this reading “Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.”

solution noun US /səˈluːʃən/

a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution

From this reading “The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.”

solved adjective US /sɑːlvd/

explained or answered

From this reading “The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.”

triangle noun US /ˈtraɪæŋɡəl/

a three-sided polygon

From this reading “Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.”

All words in this reading · 91

Every word in these five lines is listed here, and every one of them can be played on its own.

Dictionary details are shown only when verified; these are not licensed Oxford entries.

adeterminerUS /ə/

used before a singular noun to mean one of a group, when it is not a particular one

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

alladjectiveUS /ɔːl/

(quantifier) used with either mass or count nouns to indicate the whole number or amount of or every one of a class

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

AlsoadverbUS /ˈɔːlsoʊ/

in addition

From this reading Also mark off the point G so that DG shall equal DC.

althoughconjunctionUS /ˌɔːlˈðoʊ/

in spite of the fact that

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

andconjunctionUS /ənd/

used to join words or parts of a sentence that go together

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

anyadjectiveUS /ˈeni/

one or some or every or all without specification

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

asconjunctionUS /æz/

at the same time that; because; in the way that

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

BCadverbUS /ˌbiːˈsiː/

before the Christian era; used following dates before the supposed year Christ was born

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

BCF

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

BEauxiliary verbUS /biː/

used with a past participle to form the passive, or with -ing for continuous tenses

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

beingauxiliary verbUS /ˈbiːɪŋ/

the -ing form of “be”

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

BF

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

byprepositionUS /baɪ/

showing who or what does the action

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

cardnounUS /kɑːrd/

one of a set of small pieces of stiff paper marked in various ways and used for playing games or for telling fortunes

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

cardboardnounUS /ˈkɑːrdbɔːrd/

a stiff moderately thick paper

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

CDnounUS /ˌsiːˈdiː/

a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

CFnoun

a radioactive transuranic element; discovered by bombarding curium with alpha particles

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

CG

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

connectionnounUS /kəˈnekʃən/

a relation between things or events (as in the case of one causing the other or sharing features with it)

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

cornernounUS /ˈkɔːrnər/

a place off to the side of an area

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

curiousadjectiveUS /ˈkjʊriəs/

beyond or deviating from the usual or expected

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

cutverbUS /kʌt/

separate with or as if with an instrument

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

cutsnounUS /kʌts/

plural of “cut” — a share of the profits

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

DnounUS /diː/

a fat-soluble vitamin that prevents rickets

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

DCnounUS /ˌdiːˈsiː/

the district occupied entirely by the city of Washington; chosen by George Washington as the site of the capital of the United States and created out of land ceded by Maryland and Virginia

From this reading Also mark off the point G so that DG shall equal DC.

DGnoun

1/10 gram

From this reading Also mark off the point G so that DG shall equal DC.

dottedadjectiveUS /ˈdɑːtəd/

having a pattern of dots

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

drawverbUS /drɔː/

cause to move by pulling

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

equalverbUS /ˈiːkwəl/

be identical or equivalent to

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

equilateralnoun

a figure whose sides are all equal

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

factnounUS /fækt/

a piece of information about circumstances that exist or events that have occurred

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

FixverbUS /fɪks/

restore by replacing a part or putting together what is torn or broken

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

forprepositionUS /fɔːr/

intended to be given to, or used by, somebody

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

fromprepositionUS /frʌm/

showing where something starts, or who sent it

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

GnounUS /dʒiː/

a metric unit of weight equal to one thousandth of a kilogram

From this reading Also mark off the point G so that DG shall equal DC.

givenadjectiveUS /ˈɡɪvən/

acknowledged as a supposition

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

HnounUS /eɪtʃ/

a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

HAnounUS /hɑː/

(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

haveauxiliary verbUS /hæv/

used with a past participle to form the perfect tenses

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

IpronounUS /aɪ/

the person speaking or writing, as the subject of the verb

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

IfconjunctionUS /ɪf/

on condition that; in the event that

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

inprepositionUS /ɪn/

inside something, or within a place, period, or state

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

independentadjectiveUS /ˌɪndɪˈpendənt/

free from external control and constraint

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

indicatedverbUS /ˈɪndəkeɪtəd/

past form of “indicate” — be a signal for or a symptom of

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

isauxiliary verbUS /ɪz/

the form of “be” used with he, she, it, or a singular noun

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

linenounUS /laɪn/

a formation of people or things one beside another

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

madeadjectiveUS /meɪd/

produced by a manufacturing process

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

makeverbUS /meɪk/

engage in

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

markverbUS /mɑːrk/

attach a tag or label to

From this reading Also mark off the point G so that DG shall equal DC.

maymodal verbUS /meɪ/

used to say something is possible, or to give permission

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

methodnounUS /ˈmeθəd/

a way of doing something, especially a systematic way; implies an orderly logical arrangement (usually in steps)

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

moreadjectiveUS /mɔːr/

(comparative of “much” used with mass nouns) a quantifier meaning greater in size or amount or extent or degree

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

mustmodal verbUS /mʌst/

used to say something is necessary, or almost certainly true

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

nowadverbUS /naʊ/

in the historical present; at this point in the narration of a series of past events

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

obviousadjectiveUS /ˈɑːbviəs/

easily perceived by the senses or grasped by the mind

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

offadverbUS /ɔːf/

from a particular thing or place or position (“forth” is obsolete)

From this reading Also mark off the point G so that DG shall equal DC.

onprepositionUS /ɑːn/

touching and supported by a surface

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

otheradjectiveUS /ˈʌðər/

not the same one or ones already mentioned or implied

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

ourdeterminerUS /ˈaʊər/

belonging to the speaker and others

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

papernounUS /ˈpeɪpər/

a material made of cellulose pulp derived mainly from wood or rags or certain grasses

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

parallelnounUS /ˈperəlel/

something having the property of being analogous to something else

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

partlyadverbUS /ˈpɑːrtli/

to some extent; in some degree; not wholly

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

piecenounUS /piːs/

a separate part of a whole

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

pointnounUS /pɔɪnt/

a geometric element that has position but no extension

From this reading Also mark off the point G so that DG shall equal DC.

positionnounUS /pəˈzɪʃən/

the particular portion of space occupied by something

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

preferredadjectiveUS /prəˈfɜːrd/

more desirable than another

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

problemnounUS /ˈprɑːbləm/

a state of difficulty that needs to be resolved

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

produceverbUS /prəˈduːs/

bring forth or yield

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

reasonnounUS /ˈriːzən/

a rational motive for a belief or action

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

seenverbUS /siːn/

inflected form of “see” — perceive by sight or have the power to perceive by sight

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

shallmodal verbUS /ʃæl/

used with I and we for the future, or to offer and suggest

From this reading Also mark off the point G so that DG shall equal DC.

sidenounUS /saɪd/

a place within a region identified relative to a center or reference location

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

soconjunctionUS /soʊ/

for that reason; with the result that

From this reading Also mark off the point G so that DG shall equal DC.

solutionnounUS /səˈluːʃən/

a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

solvedadjectiveUS /sɑːlvd/

explained or answered

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

thanconjunctionUS /ðæn/

used to introduce the second part of a comparison

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading Also mark off the point G so that DG shall equal DC.

thedeterminerUS /ðə/

used before a noun that is already known, already mentioned, or the only one of its kind

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

thenadverbUS /ðen/

subsequently or soon afterward (often used as sentence connectors)

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

thisdeterminerUS /ðɪs/

used for a person or thing that is near, or that has just been mentioned

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

toparticleUS /tuː/

used before the base form of a verb to make the infinitive

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

trianglenounUS /ˈtraɪæŋɡəl/

a three-sided polygon

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

untilprepositionUS /ənˈtɪl/

up to a particular time

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

wepronounUS /wiː/

the speaker together with one or more other people

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

whichpronounUS /wɪtʃ/

used to introduce a clause giving more about a thing just mentioned

From this reading Draw the line CG and produce it until it cuts the line BF in H. If we now make HA parallel to BE, then A is the point from which our cut must be made to the corner D, as indicated by the dotted line.

whynounUS /waɪ/

the cause or intention underlying an action or situation, especially in the phrase “the whys and wherefores”

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

withprepositionUS /wɪð/

in the company of; together with

From this reading A curious point in connection with this problem is the fact that the position of the point A is independent of the side CD.

workingadjectiveUS /ˈwɜːrkɪŋ/

actively engaged in paid work

From this reading The reason for this is more obvious in the solution I have given than in any other method that I have seen, and (although the problem may be solved with all the working on the cardboard) that is partly why I have preferred it.

yourdeterminerUS /jɔːr/

belonging to the person or people being spoken to

From this reading Fix your card on a piece of paper and draw the equilateral triangle BCF, BF and CF being equal to BC.

Chapter 17 of Amusements in Mathematics by Henry Ernest Dudeney holds 411 sentences, grouped into 83 reading sections of at most 5 sentences. The text is the source edition, unabridged, and the chapter records which sentences cover which part of the work so that nothing is dropped. Every word can be tapped for its pronunciation and dictionary entry.

What does chapter 17 of Amusements in Mathematics contain?

Chapter 17 holds 411 sentences of Amusements in Mathematics, unabridged, divided into 83 reading sections.

This page carries chapter 17 of Amusements in Mathematics by Henry Ernest Dudeney exactly as it stands in the source edition, without abridgement. It runs to 411 sentences, grouped into 83 sections of at most 5 sentences so that a reader can take the chapter in steady, finishable pieces. The chapter also stores a coverage record mapping every one of its sentences to a part of the work, which is how the edition demonstrates that no line was dropped.

How do I study chapter 17 of Amusements in Mathematics?

Work through the 83 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 83 sections in this chapter is short enough to read once, hear once, and then re-read with the vocabulary in view. Tapping a word plays it alone and opens its dictionary entry with IPA, part of speech and meaning, so the reader is never forced to guess a pronunciation from spelling. Working section by section keeps a long chapter from becoming an undifferentiated wall of text, which is the usual reason a reader abandons a work of this period.

Can chapter 17 be read aloud to me?

Yes — every sentence and every individual word in chapter 17 can be played aloud in United States English.

Audio covers the whole chapter: any sentence can be played, and any single word within it can be played on its own. The voice uses United States English. For a work of this period that matters, because spelling is an unreliable guide to pronunciation for vocabulary that has fallen out of daily use, and a learner who guesses wrong tends to keep the error. Hearing the word in its own sentence, and then alone, settles it.

Questions about reading Amusements in Mathematics

Common questions about reading Amusements in Mathematics by Henry Ernest Dudeney on this page, its source edition and its audio.

Is this the complete text of Amusements in Mathematics?

Yes. All 8979 sentences of Project Gutenberg eBook #16713 are kept, with a record of which sentences cover which part.

Which edition of Amusements in Mathematics is used?

Project Gutenberg eBook #16713, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does Amusements in Mathematics take to read?

About 600 minutes of reading across 1796 sections of 5 sentences each, at an unhurried pace.

How to read Amusements in Mathematics section by section

How to work through Amusements in Mathematics section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 22 chapters of Amusements in Mathematics to begin.

  2. Read one section

    Each section holds 5 sentences; read it once through.

  3. Listen and tap

    Play the section aloud, then tap any unfamiliar word for its entry.

Vocabulary met early in Amusements in Mathematics

Words and structures a reader meets early in Amusements in Mathematics, each tappable for pronunciation and meaning.

Common
A word that appears in the opening chapter of Amusements in Mathematics; the reader can tap it to hear it and see its dictionary entry.
Units
A word that appears in the opening chapter of Amusements in Mathematics; the reader can tap it to hear it and see its dictionary entry.
Penny
A word that appears in the opening chapter of Amusements in Mathematics; the reader can tap it to hear it and see its dictionary entry.
Abbreviated
A word that appears in the opening chapter of Amusements in Mathematics; the reader can tap it to hear it and see its dictionary entry.