Part of the
Atlas of Small Regular Polytopes
Polytopes of Type {20,18,2}
See
other polytopes
of rank 4
Polytopes of this Type
2 in this atlas
{20,18,2}*1440a
·SmallGroup(1440,1584) · universal
{20,18,2}*1440b
·SmallGroup(1440,4569) · universal