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Difference between EvenOdd FillRule and NonZero FillRule

<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         TextBlock.FontSize="16">     <Canvas.Resources>         <!-- Define properties common to both figures. -->         <Style x:Key="figure">             <Setter Property="Polygon.Points"                 Value="  0   0,   0 184, 184 144, 144  24,20 120, 120 300, 280 264, 964,  0" />             <Setter Property="Polygon.Fill"                     Value="Blue" />             <Setter Property="Polygon.Stroke"                     Value="Red" />             <Setter Property="Polygon.StrokeThickness"                     Value="3" />         </Style>     </Canvas.Resources>     <TextBlock Canvas.Left="48" Canvas.Top="24"                Text="FillRule = EvenOdd" />     <Polygon Style="{StaticResource figure}"              FillRule="EvenOdd"              Canvas.Left="48" Canvas.Top="72" />     <TextBlock Canvas.Left="360" Canvas.Top="24"                Text="FillRule = NonZero" />     <Polygon Style="{StaticResource figure}"              FillRule="NonZero"              Canvas.Left="360" Canvas.Top="72" /> </Canvas>