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重心
Author:
cherry910502
GeoGebra
New Resources
第八周作业
兩組對邊相等的四邊形
兩位數除以一位數（二）
兩位數加法
異分母分數減法
Discover Resources
三角形外心探討
內輪差...
No.1
畢氏定理-面積切割法
生日问题
Discover Topics
Median Value
Intersection
Fractions
Curve Sketching
Solids or 3D Shapes