An elementary treatise on modern pure geometry (1893)
Lachlan, Robert · London, New York, Macmillan and Co. · leaf 279
ows that, if N be the pole of PF with respect to Z, QQmust pass through N; and that iV will be the centre of the circleq which is the reciprocal of the point-pair Q, Q. Hence we have the following construction for drawing thecircles x, x, the reciprocal pair of X, X: 262 DISCRIMINATION BETWEEN THE… … from M to Z. Then, if the diameter of X which passes through 0cut MQ, MQ in the points a, a, the circles whose centres are a, a,and whose radii are aQ, aQ will be the circles reciprocal to Xand X. 412. Let us suppose that Z is a, given cii-cle, and let X be anyvariable circle cutting Z orthogonally…
Geometry
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