Tangent to an Ellipse
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Diagram an ellipse with a tangent line that illustrates “A line through a point on the ellipse and bisecting the external angle between the focal radii is a tangent.”
Keywords
cone, ellipse, ellipses, conic section, lines, radius, focus, conics, foci, focal radii, tangent lineGalleries
Conic Sections: EllipsesSource
Arthur Latham Baker The Elements of Solid Geometr with Numerous Exercises (Boston, MA: Ginn & Company, 1893)
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