This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Grand antiprism verf. en October Grandantiprism vertex figure September UTC Tom Ruen talk created this work entirely by myself Tom Ruen talk Tomruen Original upload log page en Grandantiprismverf Tomruen bytes no Grandantiprism vertex figure created this work entirely by myself Vertex figure diagrams of polychora