_ _ _ _ _ _  x             y                    
|                           |
|       I.                    |           II. 
|                           |       
|                           |_ _ _ _ _ _ _ _ x
y                           

Вот мой пример:
using System.Collections.ObjectModel;
using System.Windows.Media;
using Point = System.Windows.Point;

namespace MapCanvas
{
    public class Class1
    {
        public ObservableCollection<PathGeometry> PathGeometry { get; set; }
        public ObservableCollection<PathData> PathData { get; set; }
        public Class1()
        {
            PathData = new ObservableCollection<PathData>
            {
                new PathData {Geometry = new LineGeometry(new Point(200, 100), new Point(115, 50)), Fill = Brushes.DarkGray, Stroke = Brushes.DarkGray, StrokeThickness = 1, IsLabel = false},
                new PathData {Geometry = new EllipseGeometry(new Point(200, 100), 3, 3), Fill = Brushes.Blue, Stroke = Brushes.Blue, StrokeThickness = 1, Label = "верхняя", IsLabel = true},
                new PathData {Geometry = new EllipseGeometry(new Point(115, 50), 3, 3), Fill = Brushes.Red, Stroke = Brushes.Red, StrokeThickness = 1, Label = "нижняя",  IsLabel = true},
            };
        }
    }

    public class PathData
    {
        public bool IsLabel { get; set; }
        public string Label { get; set; }
        public Geometry Geometry { get; set; }
        public Brush Fill { get; set; }
        public Brush Stroke { get; set; }
        public double StrokeThickness { get; set; }
    }
}

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mapCanvas="clr-namespace:MapCanvas"
        x:Class="MapCanvas.MainWindow"
        Title="MainWindow" x:Name="Page" WindowStartupLocation="CenterScreen" >
    <Window.DataContext>
        <mapCanvas:Class1/>
    </Window.DataContext>
    <Border HorizontalAlignment="Left" VerticalAlignment="Top">
        <Border.Background>
            <VisualBrush TileMode="Tile"
                             Viewport="0,0,30,30" ViewportUnits="Absolute" 
                             Viewbox="0,0,30,30" ViewboxUnits="Absolute">
                <VisualBrush.Visual>
                    <Rectangle Stroke="Darkgray" StrokeThickness="0.6" Height="30" Width="30" StrokeDashArray="3 1"/>
                </VisualBrush.Visual>
            </VisualBrush>
        </Border.Background>
        <ItemsControl ItemsSource="{Binding PathData}" Width="450" Height="225">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <Canvas>
                        <Canvas.RenderTransform>
                            <TransformGroup>
                                <!--<ScaleTransform ScaleX="1" ScaleY="-1"/>-->
                            </TransformGroup>
                        </Canvas.RenderTransform>
                    </Canvas>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <Grid> <!--Margin="0,-225,0,0"-->
                        <Path Data="{Binding Geometry}" Fill="{Binding Fill}" Stroke="{Binding Stroke}" StrokeThickness="{Binding StrokeThickness}" StrokeDashArray="4 4" />
                        <Label Content="{Binding Label}" Margin="1,-12,0,0" Padding="0" FontSize="9" HorizontalAlignment="Left" VerticalAlignment="Top">
                            <Label.Style>
                                <Style TargetType="{x:Type Label}">
                                    <Style.Triggers>
                                        <DataTrigger Binding="{Binding IsLabel}" Value="True">
                                            <Setter Property="Visibility" Value="Visible"/>
                                        </DataTrigger>
                                        <DataTrigger Binding="{Binding IsLabel}" Value="False">
                                            <Setter Property="Visibility" Value="Hidden"/>
                                        </DataTrigger>
                                    </Style.Triggers>
                                </Style>
                            </Label.Style>
                            <Label.RenderTransform>
                                <TransformGroup>
                                    <TranslateTransform X="{Binding Geometry.Bounds.X}" Y="{Binding Geometry.Bounds.Y}"/>
                                </TransformGroup>
                            </Label.RenderTransform>
                        </Label>
                    </Grid>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
        </ItemsControl>
    </Border>
</Window>

<TransformGroup>
       <ScaleTransform ScaleY="-1"/>
       <TranslateTransform
               X="{Binding ActualWidth, RelativeSource={RelativeSource AncestorType=Canvas}}"
               Y="{Binding ActualHeight, RelativeSource={RelativeSource AncestorType=Canvas}}"/>
       <ScaleTransform ScaleX="0.5" ScaleY="0.5"/>
</TransformGroup>

<TransformGroup>
       <ScaleTransform ScaleY="-1"/>
       <TranslateTransform Y="200" />
</TransformGroup>

<Path Data="{Binding Geometry}" ...