Plane and solid analytic geometry; an elementary textbook (1904)
Ashton, Charles Hamilton, 1866-1936 · New York, C. Scribner's Sons · leaf 138
nypoint of the axis. WithF as a centre and a radiusequal to DM, describe anarc, cutting ML at P.Then P is a point of theparabola. For JSTP = FP.As many points as we please may be found in this way and the parabola passed through them. 72. Auxiliary circles. — The auxiliary circle of a cen-tral… … Fig. 67. 122 ANALYTIC GEOMETRY [Ch. IX, § 72 Points on the ellipse and auxiliary circle which havethe same abscissa are called corresponding points. In
Geometry, Analytic
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