Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 131
locus of a point such that tangents from it to the circles ^. + ^2 + 40,) ,,,,i,ratio4:7. X2 + i/2 = 9, J 18. Find the circle through the origin and the points of intersection of x2 + ?/2 + 4x - 9y -8 = 0,3x + 4?/ + 2 = 0. 19. Find the circle whose diameter is the common chord of the circles x2 +… … Fig. 93. their radii; the points A and B are called the internal and ex-ternal centers of similitude, respectively. Several properties * Harmonically means internally and externally in the same ratio. THE CIRCLE 115 of these points are proven by elementary geometry, which thestudent can readily…
Geometry, Analytic
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