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Author:
袁智强
GeoGebra
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【案例】2013年安徽高考15题
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
GeoGebra笔记功能体验课件
画直线等分三角形的面积
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河內塔 (Tower of Hanoi)
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中間人星星
千年曆
二元线性规划的图解法(练习2)
Discover Topics
Distributions
Angles
Perimeter
Curve Sketching
Parametric Curves