EllipseGeometry vs Ellipse
<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Fun with Panels!" Height="313" Width="532"> <Canvas> <Ellipse Fill="Gray" Stroke="Blue" StrokeThickness="2" Width="10" Height="20" /> <Path Fill="Gray" Stroke="Blue" StrokeThickness="2"> <Path.Data> <EllipseGeometry RadiuX="5" RadiusY="10" Center="5,10" /> </Path.Data> </Path> </Canvas> </Window>