The first six books of the Elements of Euclid, in which coloured diagrams and symbols are used instead of letters .. (1847)
Euclid, Byrne, Oliver · London, W. Pickering · leaf 244
gure are faid to be reciprocally propor-tional to two fides of another figure when one of the fidesof the firft is to the fecond, as the remaining fide of thefecond is to the remaining fide of the firft. III. A straight line is faid to be cut in extreme and meanratio, when the whole is to the…
Geometry
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.
