Tetractys: Difference between revisions
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Revision as of 17:59, 7 December 2019
The tectractys was a geometrical representation of the fourth triangular number. It consisted of ten points arranged in four rows, with one, two, three, and four points on each respective row.
Pythagoras and his followers considered the tectractys to be holy. (PROSE: The Pythagoras Problem)
