A diagram showing the partition of a hexagon to illustrate <a href="https://en.wikipedia.org/wiki/Borsuk%27s_conjecture" class="extiw" title="w:Borsuk's conjecture">Borsuk's conjecture</a>.
<a href="//commons.wikimedia.org/wiki/User:NikNaks93" class="mw-redirect" title="User:NikNaks93">NikNaks93</a>
<a href="https://en.wikipedia.org/wiki/File:HexagonBorsuk.jpg" class="extiw" title="w:File:HexagonBorsuk.jpg">w:File:HexagonBorsuk.jpg</a>