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Author:
W.L. Wong, Albert
GeoGebra
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三位數除以一位數（一）
異分母分數減法
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
兩位數除以一位數（二）
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廣義三角函數
Angles between 2 planes
Apollonius Problem 6 CLP Inversion 12
happy planet
【案例】2018年全国1卷理科12题
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Rotation
Volume
Parabola
Sequences and Series
Statistics