Message: 5 Date: Mon, 20 Feb 2012 19:47:59 -0800 From: Bill Gosper <billgosper@gmail.com> To: math-fun@mailman.xmission.com Subject: Re: [math-fun] isosceles triangle dissections

 Has anyone a picture of this dissection?>> > --rwg

SA>Martin Gardner gave the 9 triangle dissection in "The Last Recreations" p253 (but Google books and Amazon wont show me that page)         Stuart Anderson

 [...] This is mysterious.  Neil just sent me some screenshots of his electronic edition.  P253 is a pure text description of a map-coloring game.  Triangular dissections are discussed on pp250 and 252, with illustrations of three dissected squares filling p251, and no mention in the text of nonasecting the 45-45-90 into acute isosceles.  Is it likely Neil's edition isn't the latest? --rwg

Nothing mysterious, I assumed (and made an ass of u and me) the diagrams discussed in the text were all given in illustrations in the following pages, but looks like he didnt give the 9 triangle dissection.