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Apr 18, 2012 at 1:14 vote accept David Feldman
Apr 18, 2012 at 1:13 comment added David Feldman This seems basically right to me...but why 81 and 54 rather than 108 and 72? One can stage Morley's theorem in the closed triangle or in any of 3 external triangles, making 4 altogether, with 27 choices of trisectors in each case, of which 18 satisfy the "key hypothesis." Right?
Apr 17, 2012 at 23:23 history edited David E Speyer CC BY-SA 3.0
added 8 characters in body
Apr 17, 2012 at 21:38 history answered David E Speyer CC BY-SA 3.0