https://pinboard.in/u:hex/public/ recent bookmarks from hex 2012-02-22T01:33:51+00:00 http://theiff.org/main.html hex art design mathematics geometry models exhibitions lectures puzzles https://pinboard.in/ https://pinboard.in/u:hex/b:b5defd452d33/ 2007-09-28T15:22:29+00:00 http://www.complang.tuwien.ac.at/schani/supermag/index.html hexgeometry solids Archimedean Platonic models math toys polyhedra https://pinboard.in/u:hex/b:58eb780e947b/ 2007-01-10T13:43:47+00:00 http://www.korthalsaltes.com/ hexmath geometry models paper polyhedra https://pinboard.in/u:hex/b:bfb517f95b0c/