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Triangles with the same height
Author:
Eve Chui
Topic:
Triangles
GeoGebra
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兩位數加法
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
四邊形的特性
異分母分數減法
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CAS View
repetitive squares by excel
密鋪8
旁心
堑堵 鳖臑 阳马
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LCM and GCD
Kite
Matrices
Conic Sections
Translation