    </dt>
        <dd>
          Binary addition operator. <a href="dart-ui/Radius/operator_plus.html">[...]</a>
                  
</dd>
        <dt id="operator -" class="callable">
          <span class="name"><a href="dart-ui/Radius/operator_minus.html">operator -</a></span><span class="signature">(<wbr><span class="parameter" id="--param-other"><span class="type-annotation"><a href="dart-ui/Radius-class.html">Radius</a></span> <span class="parameter-name">other</span></span>)
            <span class="r