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waaachen
Author:
陳兪宏
waaachen
GeoGebra
New Resources
找出對稱軸
兩位數加法
錐體建築師
球体的体积推导（优化版）
四邊形的特性
Discover Resources
加法
Copy of 閱讀鐘面及數字鐘（時和分）
君子球
中垂線性質
达芬奇椭圆仪
Discover Topics
Cuboid
Vectors 3D (Three-Dimensional)
Integral Calculus
Exponential Functions
Angles