Geometries (Silverlight 2)

 a Geometry object is unable to draw itself, so the example uses a Path shape to render them 

<Path Stroke="Black" StrokeThickness="3" Fill="Gold">
                <Path.Data>
                    <GeometryGroup>
                        <LineGeometry StartPoint="10,20" EndPoint="300,400"/>
                        <EllipseGeometry Center="100,100" RadiusX="50" RadiusY="50"/>
                        <RectangleGeometry Rect="50,50,25,25"/>
                    </GeometryGroup>
                </Path.Data>
</Path>