> Well, recycles tesselate--so that's one property that rules out pentagons, say, as our shape of choice, but why not triangles? Or hexagons? Try to sleep on a

> Well, recycles tesselate--so that's one property that rules out pentagons, say, as our shape of choice, but why not triangles? Or hexagons? Try to sleep on a triangular bed :) Try to read a triangular book or write a letter on a triangular page :) Try to watch TV on a triangular screen :) Try to hang clothes in a triangular cabinet :) Notice how much space is wasted in the corners of these (preasumably 60 degree) triangles. Our bodies are roughly rectangles and interact well with rectangular shapes. Our field of vision is a rectangle too.