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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
球體建築師
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
找出對稱軸
【案例】圆柱体内放置一个大球六个小球
Discover Resources
數學作業
funny draw
四角柱算體積(可以切開)
國旗
Shoplifting and theft histogram
Discover Topics
Vectors
Root
Continuity
Area
Linear Programming or Linear Optimization