  but has no extent</em></span> (<a href="http://en.wikipedia.org/wiki/Point_(geometry)" target="_top">wiki</a>).
          The point is the most basic geometry of Boost.Geometry, most other geometries
          consist of points. <span class="emphasis"><em>(Exceptions are box and segment, which might
          consist of two points but that is not necessarily the case.)</em></span>
        </p>
<h6>
<a name="geometry.reference.concepts.concept_point.h1"></a>
          <span class="phrase"><a name="geometry