In dictionaries:
pappus configuration
In geometry, the Pappus configuration is a configuration of nine points and nine lines in the Euclidean plane, with three points per line and three lines through each point..
pappus theorem
Pappus of Alexandria
a Greek mathematician of late antiquity known for his Synagoge or Collection, and for Pappus's hexagon theorem in projective geometry.
theorem of pappus
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