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congruent (SSA,RHS)
Author:
Ricky Chan
GeoGebra
New Resources
四邊形的特性
球体的体积推导（优化版）
兩位數除以一位數（一）
畫出對稱圖形
球體建築師
Discover Resources
glt-c05-03 正五角錐旋轉
角的認識
start and end clock face
我的第一个GGB回本
有趣的线
Discover Topics
Symmetry
Line Segment
Square
Inequalities
Addition