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congruent (AAS) 3
Author:
Ricky Chan
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
兩位數除以一位數（一）
四邊形的特性
三位數除以一位數（一）
Discover Resources
四心的變化II
testssss
三角形重心軌跡
More about Function
动圆与两(相离)圆外切
Discover Topics
Equations
Circle
LCM and GCD
Numbers
Conditional Probability