<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="ResourcesExample" Height="300" Width="300"
>
<Window.Resources>
<EllipseGeometry x:Key="geom" RadiusX="200" RadiusY="30" />
</Window.Resources>
<Rectangle Width="250" Height="50">
<Rectangle.Fill>
<DrawingBrush>
<DrawingBrush.Drawing>
<GeometryDrawing Brush="Cyan" Geometry="{StaticResource geom}" />
</DrawingBrush.Drawing>
</DrawingBrush>
</Rectangle.Fill>
</Rectangle>
</Window>
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