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polygon(first upload)
Author:
mingyi
GeoGebra
New Resources
錐體建築師
三位數除以一位數（一）
拼砌四邊形
球體建築師
球体的体积推导
Discover Resources
Angle in Alternate Segment 3
中線定理(阿波羅尼奧斯)定理推廣一：斯圖爾(Stewart)定理
二進位翻牌
畢氏定理-面積切割法
点动成线
Discover Topics
Frequency Distribution
Standard Deviation
Set Theory
Special Points
Similar Triangles