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 283
O defcribe a rectilinear figure,which /hall be fimilar to a given | rectilinear figure ( equal to another \wb )• ),and Upon defcribe and upon . defcribe | | = tB^ ■ … and having zz (B. i. pr. 45), and then and ....... will lie in the fame ftraight line (B. 1. prs. 29, 14), Between and ■• find a mean proportional (B. 6. pr. 13), and upon defcribe , fimilar to and fimilarly fituated. Then For fince and are fimilar, and j .......... (conft.), (B. 6. pr. 20); 252…
Geometry
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