Corresponding Points in an Ellipse and Circle Small 320×172 Medium 640×344 Large 1024×550 Download Tiff Original 2400×1290 | (167.5 KB) Description Illustration of half of an ellipse. "The ordinates of two corresponding points in an ellipse and its auxiliary circle are in the ratio b:a." Keywords auxiliary circle, center, chords, conic sections, corresponding points, ellipse, ellipses, focal chord, focal radii, foci, focus, major axis, minor axis, oval, ovals, radius, ratio, section Galleries Conic Sections: Ellipses Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 430
