# Ordinate and Major Axis of Ellipse

## Description

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.

## Keywords

auxiliary circle, center, chords, conic sections, ellipse, ellipses, focal chord, focal radii, foci, focus, major axis, minor axis, ordinate, oval, ovals, point, radius, ratio segments, section

## Galleries

## Source:

G.A. Wentworth *Plane And Solid Geometry* (Boston: Ginn & Company, 1899) 432

Courtesy the private collection of Roy Winkelman