Exercises on Euclid and in modern geometry for the use of schools, private students, and junior university students (1881)
McDowell, James L · Cambridge, Deighton, Bell, and Co. · leaf 196
segments of the chord of theother circle, made by the same point. Def. The locus of the intersection of equal tangentsto two circles is called the radical axis of the two circles,or, which is the same thing, the locus of a point such thatif straight lines be drawn through it, cutting both… … Fig. i, 168 .. EXERCISES ON EUCLID [200. First, let the three given circles all intersect one another, thenshall the three chords of intersection (that is, the three radicalaxes) pass through the same point within all the circles. Let A, B, C be the centres of the three circles, and let thechords…
Geometry
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-298-193.webp)
