Smart, Edward Howard · London : Macmillian and Co. · leaf 128
Fig. 49. Def. This straight line is called the Polar of the fixedpoint with respect to the conic. The point itself is calledthe Pole. In the figures O and TS are respectively pole and polarfor the ellipse, O being any point in the plane of thecurve. III. If the polar of a point A with respect to a…
Geometry, Projective
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