...">
      </form>
    </header>
    
    <ol class="breadcrumbs gt-separated dark hidden-l" id="sidebar-nav">
      <li><a href="index.html">onboarding_anim</a></li>
      <li><a href="dart-math/dart-math-library.html">dart:math</a></li>
      <li><a href="dart-math/Rectangle-class.html">Rectangle<span class="signature">&lt;<wbr><span class="type-parameter">T extends num</span>&gt;</span></a></li>
      <li class="self-crumb">width property</li>
    </ol>
    
    <h5>Rectangle class</h5>
    <ol>
      <