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 158
Draw -..i-..*— 5 the diameter of ; and if - — z= , then the problem is folved. But if ——■—«— be not equal to 9 — iz (hyp-); make -«»«.....- — —— (B. 1. pr. 3.) with------ as radius, defcribe f 1, cutting , and draw 7 which is the line required. For — ZZ ■••■•»■■•■ — —~mmmm^ (B. 1. def. 15. conft.)…
Geometry
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