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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 40

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 40
and ▼ => but (pr. 5.) s which is abfurd, therefore the two triangles cannot have their conterminousfides equal at both extremities of the bafe. Q. E. D. BOOK I. PROP. VIII. THEOR.

Geometry

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