Rhomboidicity of Kites
A kite is a quadrilateral with perpendicular diagonals that in certain circumstances is a rhomboid.
A rhomboid is a kite that in certain circumstances is square.
Can you devise a measure of rhomboidicity of kites that allows you to tell how much more rhomboidal one kite is than another?
Can you devise a second and different measure of rhomboidicity of kites? Under what circumstances might one such measure be preferable to the other?
[See the "Polygon Explorer" and "Polygon Synthesizer" applets on the mathMINDhabits website]