Point on Parabola
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Illustration of a parabola. “If a line PT is drawn from any point P of the curve, bisecting the angle between PF and the perpendicular from P to the directrix, every point of the line PT, except P, is without the curve.”
Keywords
conic sections, section, parabola, focus, point, directrix, coordinates, abscissa, ordinate, parabolas, latus rectum, focal chordGalleries
Conic Sections: ParabolasSource
G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 414
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