Point Distances to Foci on Ellipse

| View Cart ⇗ | Info

Illustration of half of an ellipse. “The sum of the distances of any point from the foci of an ellipse is greater than or less than 2a, according as the point is without or within the curve.”

Keywords

ellipse, oval, ellipses, ovals, conic sections, section, radius, focus, center, foci, chords, major axis, minor axis, focal chord, focal radii

Galleries

Conic Sections: Ellipses

Source

G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 433

Downloads

TIFF (full resolution)

2400×952, 130.3 KiB

Large GIF

1024×406, 23.8 KiB

Medium GIF

640×253, 13.2 KiB

Small GIF

320×126, 5.8 KiB