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三角形重心
Author:
Cao Yiming
移动三角形的三个顶点，A，B，C
GeoGebra
New Resources
GeoGebra笔记功能体验课件
錐體建築師
算柱 (兩位數)
三位數除以一位數（一）
直角坐標平面上的旋轉變換
Discover Resources
函數的面積 (黎曼和)
雙曲線規
台球反射
Copy of 閱讀鐘面及數字鐘（時和分）
正角、負角|Positive angles & Negative angles
Discover Topics
Isosceles Triangles
Arithmetic Operations
Polynomial Functions
Addition
Interest Calculation