交点是指线与线、线与相交。在幾何學上(准确地说在欧几里德空间中),兩條直線如非平行,必存在交點[1]。引申下去,一切事物相交接的時間空間乃至對應的集合交集之元素[2],都可被稱為交點

一條直线穿過一個圓形

參考文獻

编辑
  1. ^ Weisstein, Eric W. (编). Intersection. at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc. (英语). 
  2. ^ Vereshchagin, Nikolai Konstantinovich; Shen, Alexander. Basic Set Theory. American Mathematical Soc. 2002-01-01. ISBN 9780821827314 (英语). 
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