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congruent (SA) 2
Author:
Ricky Chan
GeoGebra
New Resources
正方形雪花图案
异形操场
中华人民共和国国旗
撒针估算面积实验
圓的切線方程
Discover Resources
定積分
柱體
包絡橢圓
對稱圖形
正十二面體內接正四面體或內接正六面體
Discover Topics
Diagrams
Square
Variance
Cuboid
Numbers