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Polygon Activity
Author:
Charlie Yip
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GeoGebra
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球体的体积推导（优化版）
找出對稱軸
画直线等分三角形的面积
兩位數除以一位數（一）
三位數除以一位數（一）
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藝術著色
正三角形
畢氏定理證明
Copy of 方格紙上畫長方形2
兩組對邊相等的四邊形
Discover Topics
Similar Triangles
Root
Vectors 3D (Three-Dimensional)
Division
Cuboid