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Author:
chen mingchuan
GeoGebra
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画直线等分三角形的面积
三位數除以一位數（一）
兩位數除以一位數（二）
四邊形的特性
異分母分數減法
Discover Resources
Sum of First n Cubes 首n個立方數之和
一般變換
四邊形層疊
Similar triangles reasons 2
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Discover Topics
Linear Programming or Linear Optimization
Constructions
Surface
Cuboid
Parametric Curves