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Tangent of a Circle 圓的切線
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
算柱 (兩位數)
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
錐體建築師
Discover Resources
proof RHS
數論淺談: 整數解之奧秘
兩圓動點中點軌跡
任務2的副本
圓的基本性質
Discover Topics
Cosine
Conditional Probability
Quadratic Equations
General Quadrilateral
Linear Regression