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Properties of parallelogram(平行四邊形的性質)
Author:
chisunch1
GeoGebra
New Resources
算柱 (兩位數)
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
兩組對邊相等的四邊形
【案例】2013年安徽高考15题
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橢圓動畫
parallelogram and squares
點到直線的距離9：常數項差距與距離比為法向量長度
正多边形构造
Inclination and Gradient(傾角和斜率)
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Geometric Mean
Volume
Congruence
Function Graph
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