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扇形旋轉
Author:
AlexWang
GeoGebra
New Resources
錐體建築師
找出對稱軸
拼砌四邊形
算柱 (兩位數)
三位數除以一位數（二）
Discover Resources
問題集
waaachen
二元线性规划的图解法(18.2 例6)
圆柱截方
圆的面积展开的副本
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Rational Numbers
Angles
Prism
Area
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