Kepler-Release/Venus/Venus_Themes/UserControls/MainTM.xaml

<UserControl x:Class="Venus_Themes.UserControls.MainTM"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Venus_Themes.UserControls"
             mc:Ignorable="d" 
             >
    <Viewbox Stretch="Fill">
        <Canvas Width="999" Height="884">
            <!--<Canvas.RenderTransform>
                <RotateTransform Angle="90"/>
            </Canvas.RenderTransform>-->

            <Polygon Points="28,735 28,263 435,28 843,263 843,735 435,970 28,735" Fill="#FFE5E5E5" StrokeThickness="10" Stroke="Gray">
             
            </Polygon>
            <Polygon Points="28,735 843,263 843,735 435,970 28,735" Fill="#FFE5E5E5" />
            <Ellipse  Width="746" Height="746" Canvas.Left="62" Canvas.Top="126">
                <Ellipse.Fill>
                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                        <GradientStop Color="Gray" Offset="0.0" />
                        <GradientStop Color="White" Offset="0.5" />
                        <GradientStop Color="Gray" Offset="1" />
                    </LinearGradientBrush>
                </Ellipse.Fill>
            </Ellipse>
            <Polyline Points="28,735 28,263 435,28 843,263 843,735 435,970 28,735" Stroke="#FF000000" StrokeThickness="3" />
        </Canvas>
    </Viewbox>
    
</UserControl>