CtrEditor/ObjetosSim/ucTransporteTTop.xaml

<UserControl x:Class="CtrEditor.ObjetosSim.ucTransporteTTop"
             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:CtrEditor"
             mc:Ignorable="d">
        <Canvas>
            <Rectangle Width="{Binding AnchoPixels}" Height="{Binding AltoPixels}" Fill="Gray">
                <Rectangle.RenderTransform>
                    <RotateTransform Angle="{Binding Angulo}"/>
                </Rectangle.RenderTransform>
            </Rectangle>
    </Canvas>

</UserControl>