Ellipse depends on Canvas layout and position
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> <Canvas> <Ellipse Canvas.Left="10" Canvas.Top="10" Fill="Cyan" Stroke="Black" Width="20" Height="60" /> </Canvas> </Page>