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 228
Fig. i.Let A and B be the centres of the two fixed circles, and G the … Fig. 2. 200 EXERCISES ON EUCLID [229. centre of the variable circle touching the two former in the pointsD, E. Join AG and BG, passing respectively through D and E(III. 11, 12), and let DE and AB meet in S. Then shall S be acentre of similitude of the two circles (A) and (B). Since the tri-
Geometry
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