A double value for a width, a delimiter, and a double value for a height. The delimiter can be either a space or comma. An attribute value for a Size value uses a type converter to process the string.
Type: System.Windows.Size A Size structure that describes the x- and y-radius of the elliptical arc. The Size structure's Width property specifies the arc's x-radius; its Height property specifies the arc's y-radius. The default is a Size with value 0,0.