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七巧板.ggb
Author:
郭勇
GeoGebra
New Resources
兩位數加法
第八周作业
錐體建築師
找出對稱軸
三位數除以一位數（二）
Discover Resources
Klein Bottle
托勒密定理推廣到任意四邊形二
正三角形
圓形重疊問題
Inclined plane (Angle between two planes)
Discover Topics
Arithmetic
Interest Calculation
Distributions
Parametric Curves
Standard Deviation