ELK/FrameworkLocal/UICore/Control/DoubleTriangle.xaml

<UserControl x:Class="Aitex.Core.UI.Control.DoubleTriangle"
             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" 
             mc:Ignorable="d" Width="15" Height="15"  BorderBrush="Black">
    <Grid  >



        <Border Width="10.5" Height="10" BorderBrush="Black"  BorderThickness="1,1,1,1" Margin="0,7,4,-2" >
            <Border.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform Angle="-45"/>
                    <TranslateTransform/>
                </TransformGroup>
            </Border.RenderTransform>
        </Border>


        <Border Height="10" BorderBrush="Black"  BorderThickness="0,0,0,0.7" Margin="1,-3,1,8" >
            <Border.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <TranslateTransform/>
                </TransformGroup>
            </Border.RenderTransform>
        </Border>
    </Grid>
</UserControl>