Part of the
Atlas of Small Regular Polytopes
Groups of Size 20
Summary
Groups
1
Nondegenerate polytopes
1
Degenerate polytopes
2
Rank 2
1
nondegenerate,
0
degenerate
Rank 3
0
nondegenerate,
2
degenerate
Groups
SmallGroup(20,4)
—
1
nondegenerate,
2
degenerate