On Fri, Mar 15, 2013 at 8:34 AM, sue neff <neffsens...@comcast.net> wrote: > Dear Origami Friends, > > Has anybody seen an explanation for why > > "folding a chop-sticks wrapper into an over-hand knot" > > Makes a perfect pentagon > > (as in Martha Stewart's pentagon Ribbon Star)? >
This is a good example for the geometry class/exercise. I am sure there are many ways to explain. The following link (the first photo) is my take: https://plus.google.com/photos/116713643662343446157/albums/5493407396840195089 Sy Chen
