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過點切圓的動圓圓心軌跡
Author:
Wu Xiao-Ren
GeoGebra
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兩組對邊相等的四邊形
球體建築師
GeoGebra笔记功能体验课件
找出對稱軸
判斷球體
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教學－直線方程性質
試繪
GGB2
圖解直式開方
小數的認識（一）
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Parametric Curves
Equilateral Triangles
Ratios
Step Functions
Quadratic Equations