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圓相切
Author:
一路梁
圓相切
GeoGebra
New Resources
兩組對邊相等的四邊形
球體建築師
找出對稱軸
三位數除以一位數（二）
GeoGebra笔记功能体验课件
Discover Resources
動圓的圓心軌跡為橢圓
正方形與圓中點軌跡(1060724)
拋物線1-焦點法
平行四边形
算柱 (兩位數)
Discover Topics
Centroid or Barycenter
Derivative
LCM and GCD
Rhombus
Mode