Similar to <a href="//commons.wikimedia.org/wiki/File:H2_tiling_2ii-7.png" title="File:H2 tiling 2ii-7.png">File:H2 tiling 2ii-7.png</a>
Anton Sherwood
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>