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Tangents from an External Point
Author:
Y.C.Lee
,
aamtinc
GeoGebra
New Resources
判斷球體
GeoGebra笔记功能体验课件
四邊形的特性
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
Discover Resources
線段前後分割
三角形外心的角度關係
指對數函數交點分析
椭圆内部全等的双椭圆构造.许兴华数学
加减法练习
Discover Topics
Real Numbers
Similarity Transformation or Similarity
Circle
Vectors 3D (Three-Dimensional)
Hypothesis Testing