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Polytopes of Type {4,21,2}

This page is part of the Atlas of Small Regular Polytopes
(See Other Polytopes of Rank 4)

There are 2 polytopes of this type in this atlas. They are :
  1. {4,21,2}*336 (SmallGroup(336,215)) (Universal)
  2. {4,21,2}*672 (SmallGroup(672,1263)) (Universal)