Mercator is the projection used by most online maps including Virtual Earth, GMaps and Yahoo
It maintains Vertical resolution while expanding the earth horizontally to fill
The effect is that items at the poles appear much larger then those of equal size at the equator.
Namespace: Telerik.Windows.Controls.MapAssembly: Telerik.Windows.Controls.DataVisualization
(in Telerik.Windows.Controls.DataVisualization.dll) Version: 2013.1.403.40