LineGeometry

<Window x:Class="Workspace.DockExample"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Workspace" Width="600" Height="440">
          <Path Stroke="Black" StrokeThickness="1">
            <Path.Data>
              <LineGeometry StartPoint="12,12" EndPoint="60,25" />
            </Path.Data>
          </Path>

</Window>

