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二面角
Author:
qianqianhouhou
二面角的概念，拖动A、E点改变半平面
GeoGebra
New Resources
拼砌四邊形
判斷球體
兩位數加法
畫出對稱圖形
直角坐標平面上的旋轉變換
Discover Resources
指數函數y=exp(x)的泰勒級數
猴子攀樹
滑桿動態指令(動畫根本指令)
比較圖形大小2
用交轨法求动点的轨迹方程图.许兴华数学
Discover Topics
Functions
Conditional Probability
Special Points
Hypothesis Testing
Parallelogram