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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
球体的体积推导
第八周作业
異分母分數減法
球体的体积推导（优化版）
球體建築師
Discover Resources
兩正弦波的合成波
tessellation design
判斷球體 7
試算表的應用
兩條直線垂直應用
Discover Topics
Solids or 3D Shapes
Rhombus
Step Functions
Perimeter
Linear Regression