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GeoGebra
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分數加減
Author:
iedc
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（一）
錐體建築師
球體建築師
算柱 (兩位數)
Discover Resources
向日葵
可調包絡圓
正方體一筆畫
畢氏定理
Temp file
Discover Topics
Area
Poisson Distribution
Geometry
Rectangle
Linear Programming or Linear Optimization