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相切的三圓
Author:
高淑蓉
GeoGebra
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常见四边形是否是双心四边形
盈利與虧蝕
异形操场
平行線的判定
比較五件物件的重量
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根據百分率找數量(二): 例1
線段前後分割
滑桿動畫基礎
B3C2-2例7-1
微積分基本定理的副本
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Arithmetic Operations
Multiplication
Cylinder
Cube
Translation