WPF: is it possible to render a circle using GeometryDrawing?

Question

I\'ve got a GeometryDrawing similar like this:

Answer 1

....
<GeometryDrawing Brush="Black">
    <GeometryDrawing.Geometry>
        <EllipseGeometry Center="0,0" RadiusX="1" RadiusY="1" />
    </GeometryDrawing.Geometry>
</GeometryDrawing>

Alternatively, you can also use Path Markup Syntax to draw two elliptic arcs (upper and lower half of the circle):

<GeometryDrawing Brush="Black" Geometry="M -1,0 A 1,1 0 1 1 1,0 M -1,0 A 1,1 0 1 0 1,0" />

Answer 2

<Path Stretch="Fill" 
      Fill="Transparent" 
      Stroke="Black" 
      StrokeThickness="5" 
      Data="M 0,0 A 180,180 180 1 1 1,1 Z"/>