Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 384
M^7 … as centre. Then inn and or are the lengths of the plansof BC and AC. Hence c, the plan of the centre of thethird sphere, is a point of intersection of two arcs drawnone with centre a, radius or, and the other with centre b,radius mn. Draw c-[c parallel to xy to meet a projector from c in c.This…