Gosset 4_21 E8 Polytope projected into 3 space. There are 240 verticesand  6720 edges of 8D length Sqrt[2]. The inner and outer hull of the H4 600 Cell are clearly visible.
<a href="//commons.wikimedia.org/wiki/User:Jgmoxness" title="User:Jgmoxness">Jgmoxness</a>
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