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 66
(pr. 13.). 4 + Km*. = ^^ (ax. 2.),and therefore (pr. 13.). O. E. D. 34 BOOK I. PROP. XXXIII. THEOR. … fRAIGHT lines (- and ) which join the adjacent extremities oftwo equal and parallelJlraight* ), are them/elves equal and parallel. Draw the diagonal. (hyp.) and —— common to the two triangles; = ——, and^J = ^L (pr. 4.); and .. (pr. 27.). Q. E. D. BOOK I. PROP. XXXIV. THEOR. 35
Geometry
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