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圓柱的展開圖
Author:
李春培
圓柱的展開圖
GeoGebra
New Resources
異分母分數減法
畫出對稱圖形
画直线等分三角形的面积
判斷球體
球体的体积推导（优化版）
Discover Resources
長方形與正方形的面積
Locus 軌跡(5T)
初中九年级数学期中考试试题
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过圆上一点作切线，三步
Discover Topics
Tangent Function
Surface
Normal Distribution
Cylinder
Random Variables