dius for either circular or elliptical shapes.
        </dd>
        <dt id="Rect">
          <span class="name "><a href="dart-ui/Rect-class.html">Rect</a></span>         
        </dt>
        <dd>
          An immutable, 2D, axis-aligned, floating-point rectangle whose coordinates
are relative to a given origin. <a href="dart-ui/Rect-class.html">[...]</a>
        </dd>
        <dt id="RRect">
          <span class="name "><a href="dart-ui/RRect-class.html">RRect</a></span>         
        </dt>
        