Describes an abstract arc of conic in 2d space Location of the conic. returns the eccentricity value of the conic e. e = 0 for a circle 0 < e < 1 for an ellipse (e = 0 if MajorRadius = MinorRadius) e > 1 for a hyperbola e = 1 for a parabola The X axis direction of the circle The Y axis direction of the circle