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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 112

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 112 — touch one another internally, they have not the fame ce?itre. … For, if it be poffible, let both circles have the famecentre; from fuch a fuppofed centre draw ---■»cutting both circles, and ■——^— to the point of contadl. Thenand — (B. i.def. 15.)(B. I.def. 15.)J a part equal to the whole, which is abfurd ;therefore the aiTumed point is not the centre of both…

Euclid's Elements · Geometry

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