<div class="figure" style="text-align: center">
<img src="figures/relation-objects-1.png" alt="Points (p 1 to 4), line and polygon objects arranged to illustrate topological relations." width="50%" />
<p class="caption">(\#fig:relation-objects)Points (p 1 to 4), line and polygon objects arranged to illustrate topological relations.</p>
</div>