Loney, S. L. (Sidney Luxton), 1860-1939 · London, Macmillan and co. · leaf 182
e the circles intersect in real points as in Fig. I.,Art. 190. If c be positive, the limiting points L^ and L^ (Fig. II.) arereal, and in this case the circles intersect in imaginary points. The limiting points are therefore real or imaginaryaccording as the circles of the system intersect in… … Then a circle, whose centre is T and whose radius is TR^will cut each circle of the coaxal system orthogonally. 168 COORDINATE GEOMETRY. [For the radius TR of this circle is at right angles tothe radius O^R, and so for its intersection with any othercircle of the system.]
Coordinates · Geometry, Analytic
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