Point on Parabola Small 320×213 Medium 640×425 Large 1024×681 Download Tiff Original 2400×1595 | (199.2 KB) Description 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 abscissa, conic sections, coordinates, directrix, focal chord, focus, latus rectum, ordinate, parabola, parabolas, point, section Galleries Conic Sections: Parabolas Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 414
