Ordinate and Major Axis of Ellipse
Illustration of half of an ellipse. The square of the ordinate of a point in an ellipse is to the product of the segments of the major axis made by the ordinate as the square of b to the square of a.
Keywordsellipse, oval, ellipses, ovals, conic sections, section, radius, focus, point, center, foci, chords, major axis, minor axis, ordinate, focal chord, focal radii, auxiliary circle, ratio segments
GalleriesConic Sections: Ellipses
G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 432