Pappus's hexagon theorem

专有名词

英文释义

专有名词
  1. A theorem valid for projective planes over any field, stating that, given one set of collinear points A,B,C, and another set of collinear points a,b,c,, the intersection points X,Y,Z of line pairs Ab and aB,Ac and aC,Bc and bC are collinear, lying on the "Pappus line". These three points are the points of intersection of the "opposite" sides of the hexagon AbCaBc.

词源

Attributed to the Ancient Greek mathematician Pappus of Alexandria (c. 290–c. 350 AD).
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