Keywords: 4 21 polytope B2 Petrie.svg Gosset 4_21 polytope as orthogonal projection graph in B2 Petrie polygon basis Red orange yellow green vertices have multiplicity of 1 12 32 60 <br/> Projection basis of 2-cube square v1 1 0 v2 0 1 Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Sreejithk2000 using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper <br/> Original text I Tom Ruen talk created this work entirely by myself 00 06 25 February 2010 UTC <br/> Tomruen original upload log page en wikipedia 4_21_polytope_B2_Petrie svg 2010-02-25 00 06 Tomruen 800×800× 409396 bytes <nowiki> Gosset 4_21 polytope as orthogonal projection graph in B2 Petrie polygon basis I ~~~ created this work entirely by myself ~~~~~ ~~~ p</nowiki> Set of colored Coxeter plane graphs; 13 vertices |