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三角形外角和=360⁰
Author:
李春培
三角形外角和=360⁰
GeoGebra
New Resources
錐體建築師
兩組對邊相等的四邊形
判斷球體
球体的体积推导（优化版）
四邉形 (四年級) 教師版
Discover Resources
平面與正立方體的截痕
Copy of 部分佔全部的百分率: 例1
Copy of 球面
相机快门模拟
堑堵 鳖臑 阳马
Discover Topics
Quadratic Equations
Bar Chart or Bar Graph
Upper and Lower Sum or Riemann Sum
Trapezoid
Parallelogram