Part of the
Atlas of Small Regular Polytopes
Polytopes of Type {6,21,2}
See
other polytopes
of rank 4
Polytopes of this Type
3 in this atlas
{6,21,2}*504
·SmallGroup(504,192) · universal
{6,21,2}*672
·SmallGroup(672,1260) · universal
{6,21,2}*1512
·SmallGroup(1512,561) · universal