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:
T polytope Coxeter plane.svg Truncated polytope in Coxeter Plane projection vertex multiplicity by color red orange cyan July UTC Tom Ruen talk created this work entirely by myself br from org en Tom Ruen talk en Tomruen Original upload log page en TpolytopeECoxeterplane svg Tomruen bytes no Truncated polytope