What is the difference between the drawing of the Eccentric Anomaly and the Mean Anomaly. http://www.philosophaie.com/EA.png [Broken] One has a circle radius "a" inscribed an ellipse with a focus "F". The True Anomaly makes "f" makes an angle to point "P" then a perpendicular is drawn to a point on the circle where a line is drawn to the center. What is this angle Mean or Eccentric? How do you draw the other Anomaly?