WPF 2D Geometry and Mini-Language

<Window x:Class="WpfApplication20.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Geometry and Mini-Language" Height="350" Width="525">
<Window.Resources>
<SolidColorBrush x:Key="MyGrayGridBrush" Color="YellowGreen"/>
</Window.Resources>
<StackPanel>
<Path Stroke="Blue">
	<Path.Data>
		<PathGeometry>
			<PathFigure StartPoint="0,0">
				<PolyLineSegment 
            Points="40,32,40,42,30,37"/>
			</PathFigure>
		</PathGeometry>
	</Path.Data>
</Path>
<Path Stroke="Blue"  
	Data="M 0 0 L 40 32 L 40 42 L 30 37"/>
</StackPanel>
<!--
Smooth Quadratic Bezier curve 
=> T pt, endpoint t pt, endPoint
Elliptical 
=> Arc A size, angle,  isLargeArc,  Direction, endpoint a size, angle,…
Close 
=> Z z
Point 
=> X, Y or x  y
Special values 
=> Infinity -Infinity NaN
-->
</Window>

reference : Practical WPF Graphics Programming