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1060420內接def
Author:
陳正鴻
GeoGebra
New Resources
画直线等分三角形的面积
球体的体积推导
讀磅
三位數除以一位數（一）
直線的斜率
Discover Resources
哈里斯螺旋 - 框線版 (Harriss Spiral)
小圓外繞大圓
Copy of 正立方體中的正四面體
Copie de 河內塔 (Tower of Hanoi)
生日问题
Discover Topics
Geometric Transformations
Quadratic Equations
Upper and Lower Sum or Riemann Sum
Vectors 3D (Three-Dimensional)
Plane Figures or Shapes