A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 338
ne of the circle, the locusof the harmonic conjugate of thefixed point, in reference to the in-tersections, is the I^olav of the fixedpoint. The fixed point is the JPoleof the Polar Line. The terms poleand polar as here used are correlativeand neither has any significancewithout the other. III.—Let… … yOO Tlieo.—Tlie Polar of a given point in respect to a circle is arigid line. Dem.—Let P be the pole, AP any secant passing through P, and a point in the polar. The locus of C is required. Draw PL through the centre, and let fall the perpendicular CC. Draw AL, AH, ACT, and CB. Since AC :CB:: AP:…
Geometry · Trigonometry
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