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Author:Ng KC

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判斷球體
球體建築師
三位數除以一位數（一）
sanjiaohanshu
找出對稱軸

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M05E Rate of Change 2
正12面體內接正四面體
空間中兩點間的距離
正五角錐(旋轉，實體、透視)
固定周界長方形的面積變化（二）

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Ellipse
Translation
Geometry
Intersection
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