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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 290

An illustration from The first six books of the Elements of Euclid, in which coloured diagrams and symbols are used instead of letters .., 1847, leaf 290 — Make — , and draw —-■«—drawwith the radiusmeeting Then —— * and ■, defcribe a circle■ produced. X But 1 (B. 2. pr. 6.) = \ .........9 _|_ _ 2 (B. 1. pr.47.) and * + from both take X but = + 2« = the given area. C^E. D. L L 258 BOOK VI. PROP. XXX. PROB. … O cut a given finite jiraight line (—— ) in extreme and mean ratio. On (B. i. pr. 46) ; and produce — x defcribe the fquare ——— , (o that (B. 6. pr. 29); takeand draw «■meeting II Then u X- (B. 1. pr. 31). »■■■■■■» and is /. — 1 • and if from both thefe equals be taken the common part J, which is…

Geometry

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