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congruent (AAA)
Author:
Ricky Chan
GeoGebra
New Resources
兩位數除以一位數（二）
畫出對稱圖形
兩位數加法
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
Discover Resources
比較角的大小一
展開圖
孔明棋
正立方體裁邊 (Chamfered Cube)
sin(x) 的函數圖形的副本
Discover Topics
Quadratic Functions
Pyramid
Combinatorics
Logarithmic Functions
Fractal Geometry