Tangents to a Parabola
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Illustration showing that if two tangents RP and RQ are drawn from a point R to a parabola, the line drawn through R parallel to the axis bisects the chord of contact.
Keywords
conic sections, section, parabola, focus, Parallel, directrix, coordinates, tangents, parabolas, latus rectum, focal chordGalleries
Conic Sections: ParabolasSource
G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 418
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