The GeoAngle class defines an angle that may be given in degrees or radians (but not both).
It automatically converts angles to degrees and radians for easier access
The GeoCircle class defines an geometric circle with radius.
The class may be used to calculate coordinates on the circle given an angle in radians or degrees.
The GeoEllipse class defines an geometric ellipse with horizontal radius xRadius, and vertical radius yRadius.
The class may be used to calculate coordinates on the ellipse given an angle in radians or degrees.