The Klein Configuration
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Take three points , , on one line and three points , , on another line. Join them with six lines and define three points , , . Pappus's theorem states that , , lie on a line. These nine points and nine lines represent a "configuration". Each point is on three lines, and each line goes through three points. This is called the Pappus configuration.
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Contributed by: Ed Pegg Jr (November 2016)
Open content licensed under CC BY-NC-SA
Snapshots
Details
Further details are in [1].
Reference
[1] R. W. H. T. Hudson, Kummer's Quartic Surface, 1905. archive.org/details/quarticsurface00kummrich.
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