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凹正方形
Author:
王玉霞
GeoGebra
New Resources
四邊形的特性
錐體建築師
兩位數除以一位數（二）
找出對稱軸
GeoGebra笔记功能体验课件
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waaachen
圓周
Ex5C#13
內擺線
一維對心碰撞動量守恒相圖分析_繁体版
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Rectangle
Secant Line or Secant
Parallelogram
Rhombus
Step Functions