Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 165
e curve, the polar coincideswith the tangent. 148 ANALYTICAL GEOMETRY When (ccj, y^ is outside, the polar is the chord of contactfor that point. In general, the properties of the pole andpolar proved in the chapter on the circle, will be found tobe true for the conic sections. Note. —The polar of… … Fig. no. MN = 2 a and draw PT ± to PN ; or take OT = OM and draw PT. Ineither way PT will be tangent at P. [Why?]
Geometry, Analytic
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
