Keywords: Penrose Tiling (P1).svg Penrose tiling using Penrose's original set of six tiles the P1 set If this is considered as a packing of pentagons only the packing fraction is 0 809 http //prb aps org/abstract/PRB/v68/i6/e064102 Own Inductiveload 2009-02-01 Penrose tilings 5-fold rotational symmetry Geometry images with dihedral symmetry 05 |