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三圓外切2
Author:
AlexWang
GeoGebra
New Resources
球體建築師
異分母分數減法
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
球体的体积推导（优化版）
Discover Resources
直线倾斜角与斜率
動態文字2次函數
尋找極小值
向量與坐標
求直角三角形的斜邊
Discover Topics
Linear Functions
Similarity Transformation or Similarity
Exponent
Square
Congruence