交点

交点是指线与线、线与相交。在几何学上(准确地说在欧几里德空间中),两条直线如非平行,必存在交点[1]。引申下去,一切事物相交接的时间空间乃至对应的集合交集之元素[2],都可被称为交点

一条直线穿过一个圆形

参考文献

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