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Author:
chen mingchuan
GeoGebra
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兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
找出對稱軸
兩組對邊相等的四邊形
四邊形的特性
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angle0428
VV圓
gjzbh 矩陣與遞迴關係（3階）
左右
三角形三边关系
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Expected Value
Matrices
Indefinite Integral
Definite Integral
Numbers