Apeirogonal hosohedron, {2,∞}, the dual of apeirogonal tiling {∞,2}.
<a href="//commons.wikimedia.org/wiki/User:Apocheir" title="User:Apocheir">Apocheir</a>
2016-10-18
<span class="int-own-work" lang="en">Own work</span>