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多边形的展开
Author:
赵林
GeoGebra
New Resources
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
兩組對邊相等的四邊形
判斷球體
画直线等分三角形的面积
Discover Resources
牛頓法 (Newton's Method)
勒洛三角形(方型鑽子模型)
向量求和动画演示
六上：圆的面积公式推导
星形线-Astroid Curve-with-Envelope Command
Discover Topics
Circumcircle or Circumscribed Circle
Multiplication
Similar Triangles
Difference and Slope
Sine