why a simple shape Incorrectly drawn?

[Reza]

I want to draw a simple ellipse in radmap 
with width and height 
20000,
but incorrectly like 
an elongated oval is drawn Why do this?
Other shape like rectangle has same problem 


too.




I add a simple radmap:

       <telerik:RadMap x:Name="radMap">
            <telerik:RadMap.Provider>
                <telerik:EmptyProvider />
            </telerik:RadMap.Provider>
            <telerik:InformationLayer x:Name="informationLayer">
            </telerik:InformationLayer>
        </telerik:RadMap>

In code behind:

            var newShape = new MapEllipse()
            {
                Location = new Location()
                {
                    Latitude = 50,
                    Longitude = -111,
                },
                Fill = new SolidColorBrush(Color.FromArgb
                                   (0xFF, 0xF0, 0xB5, 0x85)),
                Width = 20000,
                Height = 20000
            };
            this.informationLayer.Items.Add(newShape);
            radMap.Center = new Location(
            newShape.Location.Latitude, newShape.Location.Longitude);

[Andrey]

Hello Reza,

It is expected behavior. The width and height of MapEllipse are assigned in kilometers or miles. RadMap uses the Mercator projection.
http://en.wikipedia.org/wiki/Mercator_projection
The Mercator projection distorts the size and shape of large objects, as the scale increases from the Equator to the poles, where it becomes infinite. So, the MapEllipse does not look always like standard ellipse when its width is equal its height.

Regards,
Andrey Murzov
the Telerik team