交點

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

  1. {{Cite web |url=http://mathworld.wolfram.com/Intersection.html |title=Intersection |website=at MathWorld--A Wolfram Web Resource |publisher=Wolfram Research, Inc. |editor-first=Eric W. |editor-last=Weisstein |editor-link=埃里克·韦斯坦因 |accessdate= |quote= |language=en }}
  2. Vereshchagin, Nikolai Konstantinovich; Shen, Alexander. . American Mathematical Soc. 2002-01-01. ISBN 9780821827314 (英语).
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