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Author:
lamanleung
GeoGebra
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【案例】2013年安徽高考15题
兩位數除以一位數（一）
找出對稱軸
兩組對邊相等和有直角的四邊形
三位數除以一位數（二）
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正方變十字
正四面體空間中投影
Section Curves (2)
angle between 2 planes 01
对数函数——底数大小与图形
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Cosine
Standard Deviation
Sphere
Prism
Quadrilaterals