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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
找出對稱軸
柱體建築師
【案例】圆柱体内放置一个大球六个小球
球體建築師
異分母分數減法
Discover Resources
垂心即內心
Quiz on Angle between a Line and a Plane 線面角：測驗
DSE Circle-ACT01A Relationship between Chords and Centre of a Circle
分數乘法
三角形内角和
Discover Topics
Solids or 3D Shapes
Rectangle
Cuboid
Stochastic Process or Random Process
Geometric Transformations