n><span class="signature">(<span class="parameter" id="circular-param-radius"><span class="type-annotation"><a href="dart-core/double-class.html">double</a></span> <span class="parameter-name">radius</span></span>)</span>
        </dt>
        <dd>
          Constructs a circular radius. <a href="dart-ui/Radius/x.html">x</a> and <a href="dart-ui/Radius/y.html">y</a> will have the same radius value.
          <div class="constructor-modifier features">const</div>
        </dd>
        <dt id="Radius.elliptic