In 4 dimensonal space, the 120-cell would make a d120 that&#x27;s completely regular, like a platonic solid:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;120-cell" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;120-cell</a>