<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="300" Width="300"> <Canvas Margin="5"> <Polygon Canvas.Top="110" Canvas.Left="45" Points="40,0 150,100 10,100" Stroke="Black" StrokeThickness="1"> <Polygon.Fill> <ImageBrush ImageSource="c:\image.jpg" Stretch="Uniform" AlignmentX="Left" /> </Polygon.Fill> </Polygon> </Canvas> </Window>