Keywords: 4-demicube.svg 4-demicube 16-cell graph orange center has 2 vertices en wikipedia Sreejithk2000 CommonsHelper 2010-02-25 Tomruen wikipedia en Tomruen original upload log page en wikipedia 4-demicube svg 2010-02-25 02 00 Tomruen 800×800× 2113 bytes <nowiki>tweak</nowiki> 2010-02-25 01 50 Tomruen 800×800× 2106 bytes <nowiki>4-demicube 16-cell graph </nowiki> Undirected graphs related to polytopes |