File:The Ancient Egyptian Geometrical System.jpg

From the topological model of the Analemma, as two circles whose centers indicate the noontime points of the longest and shortest days of the year, the primary division of the diameter line informs 3 units, and in turn informs the 3 unit circle which circumscribes the 2 circle model, and the 1 unit circle which is incribed within the "eye" or "lens".