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GeoGebra
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找出對稱軸
錐體建築師
異分母分數減法
三位數除以一位數(二)
画直线等分三角形的面积
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阿基米德(3,6,6)
HKMO 2008 Question 3 Demonstration (Geometric Construction)
man1
整數乘分數
到两点距离之积为定值的点的轨迹
Discover Topics
Definite Integral
Rotation
Parallelogram
Constructions
Line Segment