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Pappus Chain

Author:李俊儀

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【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（二）
異分母分數減法

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風車
TESTAERE
test
congruent (SSS) 5
球面截痕

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Symmetry
Linear Programming or Linear Optimization
Variance
Definite Integral
LCM and GCD

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