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三圓外切2
Author:
AlexWang
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
画直线等分三角形的面积
兩位數除以一位數（二）
判斷球體
Discover Resources
高美濕地風車2
內心
圓心的軌跡方程式
作業
测试
Discover Topics
Geometric Distribution
Normal Distribution
Arithmetic Mean
Translation
Conic Sections