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三角形不等式
Author:
cyrus
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（一）
判斷球體
錐體建築師
畫出對稱圖形
Discover Resources
分數的大小變化
task 2
test
圓與正方形中點軌跡1060317
「相似三角形」任务1的副本
Discover Topics
Parametric Curves
Orthocenter
Parabola
Rational Numbers
Means