Line Bisecting Angle Between Focal Radii on Ellipse

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Illustration of half of an ellipse. “If through a point P of an ellipse a line is drawn bisecting the angle between one of the focal radii and the other produced, every point in this line except P is without the curve.”

Keywords

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

Galleries

Conic Sections: Ellipses

Source

G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 434

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