Rotate Polyline
<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="450">
<Canvas>
<Polyline Canvas.Left="90" Canvas.Top="10" Stroke="Black" StrokeThickness="5"
Points="10,10 100,0 100,100 0,100 0,20 80,20 80,80 20,80, 120,140 60,40 160,60 40,60" >
<Polyline.LayoutTransform>
<RotateTransform Angle="45" CenterX="50" CenterY="50"/>
</Polyline.LayoutTransform>
</Polyline>
</Canvas>
</Window>
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