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Centres in a Triangle(三角形的中心)
Author:
chisunch1
GeoGebra
New Resources
異分母分數減法
錐體建築師
找出對稱軸
柱體建築師
球体的体积推导（优化版）
Discover Resources
餘弦定理
arithmetic operation
外心
Net1- AB+AD+AE
一个三棱锥的绘图案例
Discover Topics
Distributions
Optimization Problems
Quadratic Equations
Coordinates
Triangles