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Tangent perpendicular to radius
Author:
Big Lee
GeoGebra
New Resources
GeoGebra笔记功能体验课件
判斷球體
錐體建築師
球體建築師
拼砌四邊形
Discover Resources
集合運算
同心圓內的直線2
圓周角觀察操作
弧長與圓心角成比例
閱讀月曆（綜合版）
Discover Topics
Multiplication
Optimization Problems
Addition
Pythagoras or Pythagorean Theorem
Hyperbola