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Pappus's hexagon theorem
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English
Etymology
Attributed to the Ancient Greek mathematician Pappus of Alexandria (c. 290–c. 350 AD).
Proper noun
Pappus's hexagon theorem
en geometry A theorem valid for projective planes over any field, stating that, given one set of collinear points and another set of collinear points , the intersection points of line pairs and and and are collinear, lying on the "Pappus line". These three points are the points of intersection of the "opposite" sides of the hexagon .
Related terms
en Pappian
en Pappus line
en eponyms