X-Nico

3 unusual facts about Petrie polygon


Petrie polygon

In 1972, a few months after his retirement, Petrie was killed by a car while attempting to cross a motorway near his home in Surrey.

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John Flinders Petrie (1907-1972) was the only son of Egyptologist Sir W. M. Flinders Petrie.

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The plane in question is the Coxeter plane of the symmetry group of the polygon, and the number of sides, h, is Coxeter number of the Coxeter group.



see also