What are 2 specific properties of an ellipse?

All ellipses have two focal points, or foci. The sum of the distances from every point on the ellipse to the two foci is a constant. All ellipses have a center and a major and minor axis. All ellipses have eccentricity values greater than or equal to zero, and less than one.

Explanation:

answergeosphere;

answerhydrogenous sediment;