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圆柱侧面椭圆截面展开
Author:
朱亮
GeoGebra
New Resources
四邊形的特性
兩組對邊相等的四邊形
直角坐標平面上的旋轉變換
兩位數除以一位數（二）
画直线等分三角形的面积
Discover Resources
animation for kastin
包絡線
林昌翰 拋物面鏡
奠基
Protractor-usage
Discover Topics
Polygons
Solids or 3D Shapes
Quadrilaterals
Incircle or Inscribed Circle
Sequences and Series