And that's why it is a puzzle. On Thu, Jun 9, 2016 at 8:13 AM, Allan Wechsler <acwacw@gmail.com> wrote:
It can't be edge-to-edge *anywhere. *I am not seeing how to do this at all.
On Thu, Jun 9, 2016 at 10:58 AM, Veit Elser <ve10@cornell.edu> wrote:
On Jun 9, 2016, at 10:34 AM, Fred Lunnon <fred.lunnon@gmail.com>
wrote:
Any interior edge is common to two small triangles, so all interior sides must be equal in pairs? WFL
True, the dissection/tiling cannot be edge-to-edge. But consider a triangle, and mark one point on each of its edges, always within the first half in a clockwise sense. Joining vertices to marked points on opposite edges will form an internal triangle — that is one of the triangles of the dissection. I’ll leave it to you to find the other three.
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