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教学素材：正余弦函数及其反函数
Author:
清风拂琴，陌上花开
GeoGebra
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【案例】2013年安徽高考15题
拼砌四邊形
GeoGebra笔记功能体验课件
球體建築師
找出對稱軸
Discover Resources
落在區域內的星星
区域面积
餘弦的定理
正四面体分形
三節棍
Discover Topics
Planes
Complex Numbers
Normal Distribution
Boxplot
Subtraction