<Window x:Class="CombinedGeometryExample" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Combined Geometry" Height="340" Width="300"> <Border Margin="5" BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Left"> <Canvas Width="300" Height="340" Margin="5"> <Path Fill="LightBlue" Stroke="Blue" Margin="10,0,0,0"> <Path.Data> <CombinedGeometry GeometryCombineMode="Exclude"> <CombinedGeometry.Geometry1> <EllipseGeometry Center="50,50" RadiusX="50" RadiusY="50" /> </CombinedGeometry.Geometry1> <CombinedGeometry.Geometry2> <EllipseGeometry Center="80,50" RadiusX="50" RadiusY="50" /> </CombinedGeometry.Geometry2> </CombinedGeometry> </Path.Data> </Path> </Canvas> </Border> </Window>