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The first six books of the elements of Euclid, in which coloured diagrams and symbols are used instead of letters for the greater ease of learners (1847)

Byrne, Oliver, Whittingham, Charles, 1795-1876, Chiswick Press · London : William Pickering · leaf 165

An illustration from The first six books of the elements of Euclid, in which coloured diagrams and symbols are used instead of letters for the greater ease of learners, 1847, leaf 165 — And becaufe mg ^ |^^ (confl.), and •••■•■■SM« >■■>■■■■■■■ • •••»»•■•■••= f B. I. def. I c). .*. — = —>— (B. I. pr. 4); and fmce the adjacent fides and angles of the parallelo- gram ^ X are equal, they are all equal (B. i. pr. 34); o and /, -^ ^ , infcribed in the given circle, is afquare.…

Euclid's Elements · Geometry

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