Archive for May, 2012
so here’s how to memorize the alphabetic
version of “ten point reverse tic-tac-toe”.
just learn to draw half an icosa and fill
in the letters: A in the middle, BC,
DE, FG around the edge, and HIJ
back the other way. simple.
(the “poles” are then in the rather
disturbing order JIHGEFDCBA.
something fishy here.)
with “pairs of opposite faces” of an icosahedron as “points”, the ten “lines” of the
desargues configuration have the
very pleasant form seen here.
stand by for another post on this.