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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 111

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 111 — F two circles © touch one another internally, they have not the fame centre. … For, if it be poffible, let both circles have the famecentre ; from fuch a fuppofed centre draw icutting both circles, and to the point of contact. Thenand «»•»•■■ - (B. i.def. 15.) - (B. i.def. 15.) equal to the whole, which is abfurd ;therefore the afTumed point is not the centre of both cir-cles…

Geometry

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