Definition:Diameter of Ellipse

Definition
Let $\KK$ be an ellipse.

A diameter of $\KK$ is the locus of the midpoints of a system of parallel chords of $\KK$.


 * Locus-of-chord-midpoints-of-ellipse.png

Also see

 * Locus of Midpoints of Parallel Chords of Central Conic passes through Center


 * Definition:Diameter of Conic Section:
 * Definition:Diameter of Circle
 * Definition:Diameter of Parabola
 * Definition:Diameter of Hyperbola