WPF，请问这个几何图形如何设置线条的粗细

  <Canvas Height="295" Name="canvas1" Width="418">

        <Path Stroke="Blue" >

            <Path.Data>

                <PathGeometry>

                    <PathFigure IsClosed="True" StartPoint="10,100">

                        <LineSegment Point="100,100" />

                        <LineSegment Point="100,50" />

                    </PathFigure>

                </PathGeometry>

            </Path.Data>

        </Path>

    </Canvas>

请问这个几何图形如何设置线条的粗细？
------解决方案--------------------
下面红色标记了的就是你所要的。
<Canvas Height="295" Name="canvas1" Width="418">
            <Path Stroke="Blue" StrokeThickness="5">
                <Path.Data>
                    <PathGeometry>
                        <PathFigure IsClosed="True" StartPoint="10,100">
                            <LineSegment Point="100,100"/>