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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 173

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 173 — » common; and «-i-iaMaiii. ^ ...HMMiB, ,•, •■^-■» .—^K ^ twice —^— 5 In the fame manner it can be demonftrated that 1^^^---— ^ twice ■-■^-•, but —— = ——• In the fame manner it can be demonftrated that theother fides are equal, and therefore the pentagon is equi-lateral, it is alfo equiangular, for… … Draw Becaufeand

Euclid's Elements · Geometry

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