<https://robertedwardgrant.com/the-granthahedron-and-enkehedron-families-of-novel-geometric-polytopes/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://robertedwardgrant.com/the-granthahedron-and-enkehedron-families-of-novel-geometric-polytopes/>