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圆锥的侧面展开图3D动画的副本
Author:
吉顺国
拖动点C
圆锥的侧面展开图是三角形吗?
New Resources
畫出對稱圖形
判斷球體
球体的体积推导(优化版)
兩組對邊相等的四邊形
【案例】2013年安徽高考15题
Discover Resources
拋物線
說明用01
相机快门模拟
拋物線四-平行四邊形法
整數
Discover Topics
Statistical Characteristics
Line Segment
Derivative
Solids or 3D Shapes
Rotation