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Addition of 2 Directed Numbers
Author:
Chan Man Fai
Addition of 2 directed numbers
GeoGebra
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画直线等分三角形的面积
畫出對稱圖形
三位數除以一位數（二）
找出對稱軸
GeoGebra笔记功能体验课件
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「相似三角形」任务5
Geogebragoodone
不規則圖形的周界(T)
橢圓軌跡02
Copy of 圓周公式應用題2
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Similar Triangles
Dilation
Trigonometric Functions
Ellipse
Equilateral Triangles