title: In XAML, how can I keep an ellipse being a circle?
body: <p>I'm getting XAML-blind I'm afraid. I'm developing a MS Surface application and I have an ellipse inside a ScatterViewItem (a container an end user can resize). I would like to keep the ellipse a circle (width == height) and keep it as big as possible (the lowest value of width/height of the SVI should be taken for both width/height properties of the ellipse).</p>
  
  <p>A XAML only solution (using property triggers or similar) is prefered.</p>
  
  <p>Your help is much appreciated as always.</p>