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Author:
johnmayhk
GeoGebra
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兩組對邊相等和有直角的四邊形
找出對稱軸
兩位數加法
画直线等分三角形的面积
【案例】2013年安徽高考15题
Discover Resources
三角形及多邊形
八芒星
托勒密定理推廣到直線
Copy of 七巧板
約分BB
Discover Topics
Geometric Distribution
Volume
Median Value
Set Theory
Surface