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兩圓內公切線
Author:
郭逸民
兩圓內公切線
GeoGebra
New Resources
【案例】2013年安徽高考15题
GeoGebra笔记功能体验课件
三位數除以一位數（一）
球體建築師
【案例】2018年全国1卷理科12题
Discover Resources
Generalized Pythagorean Theorem
直線與圓(直線方程式圖形特性3)
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sin(x) 的函數圖形的副本
基础知识
Discover Topics
Conditional Probability
Exponent
Derivative
General Quadrilateral
Quadratic Equations