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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
三位數除以一位數（二）
兩位數加法
直角坐標平面上的旋轉變換
錐體建築師
判斷球體
Discover Resources
認識正方形
正十二面體轉正二十面體
夜市麻將模擬機
切割正立方體
模拟时钟
Discover Topics
Vectors 3D (Three-Dimensional)
Optimization Problems
Linear Programming or Linear Optimization
Median Value
Constructions