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Author:
李春培
GeoGebra
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找出對稱軸
三位數除以一位數（一）
兩位數除以一位數（二）
三位數除以一位數（二）
算柱 (兩位數)
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正9邊形
分形几何欣赏初步：树型图
Lab 3 Task 1 : Rectangle Construction
正多边形构造
Copy of mearm機械手臂模擬
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Planes
Rectangle
Linear Equations
Similar Triangles
Random Experiments