assumption.
          </p></td></tr>
</table></div>
<h6>
<a name="geometry.reference.concepts.concept_segment.h2"></a>
          <span class="phrase"><a name="geometry.reference.concepts.concept_segment.available_models"></a></span><a class="link" href="concept_segment.html#geometry.reference.concepts.concept_segment.available_models">Available
          Models</a>
        </h6>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
              <a class="