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congruent (AAA) 2
Author:
Ricky Chan
GeoGebra
New Resources
三位數除以一位數（二）
兩位數加法
兩組對邊相等的四邊形
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
面积与面积问题
E-X 电势-X
Parallel lines
同心圓
五边形的旋转平铺（迭代加序列）
Discover Topics
Natural Numbers
Straight Lines
Vectors 2D (Two-Dimensional)
Special Points
Stochastic Process or Random Process