<a href="https://en.wikipedia.org/wiki/9-simplex" class="extiw" title="en:9-simplex">en:9-simplex</a> family graph, orthographic projection in Ak Coxeter plane
<a href="//commons.wikimedia.org/wiki/User:Tomruen" title="User:Tomruen">User:Tomruen</a>
<span class="int-own-work" lang="en">Own work</span>