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congruent (SAS)
Author:
Ricky Chan
GeoGebra
New Resources
四邊形的特性
兩位數除以一位數（一）
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
三位數除以一位數（一）
Discover Resources
阿基米德(3,10,10)
圓周 (圖形H)
正立方體
Net of pyramid
Rolling Square
Discover Topics
Square
Matrices
Tree Diagrams
Orthocenter
Median Line