title: Draw solid color triangle using XAML only
body: <p>Is it possible to draw a filled in triangle using XAML only (not a code behind solution)?</p>
  
  <p>Triangle should be like on the image below to represent sort direction <code>Ascending/Descending</code> along with a sort button on a chart control:</p>
  
  <p><img src="https://i.stack.imgur.com/nsqNv.png" alt="enter image description here"></p>
  
  <p><strong>EDIT:</strong> The solution, thanks to <a href="https://stackoverflow.com/users/444231/spezifish">SpeziFish</a>:</p>
  
  <p>Ascending:</p>
  
  <pre><code>&lt;Polygon Points="0,0 8,5, 0,10" Stroke="Black" Fill="Black" /&gt;
  </code></pre>
  
  <p>Descending:</p>
  
  <pre><code>&lt;Polygon Points="8,0 0,5, 8,10" Stroke="Black" Fill="Black" /&gt;
  </code></pre>