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五上-CP4-第三节平行四边形面积1
Author:
冉献伟
GeoGebra
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算柱 (兩位數)
画直线等分三角形的面积
GeoGebra笔记功能体验课件
找出對稱軸
判斷球體
Discover Resources
有向數
三角形的內心軌跡
GGB5
duality of regular polyhedron
銳角三角：sin, cos
Discover Topics
Mode
Piecewise Functions
Reflection
Sine
Quadrilaterals