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Author:
万超杰
GeoGebra
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球体的体积推导(优化版)
四邉形 (四年級) 教師版
錐體建築師
【案例】2013年安徽高考15题
畫出對稱圖形
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平行線
正角柱體
三视图积木
平移
初中数学模型
Discover Topics
Constructions
Means
Functions
Integers
Vectors 2D (Two-Dimensional)