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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 40

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 40 — nterminousfides ( and —^— ^ •——■ and «i^i—ii^—) at both extremities ofthe bafe, equal to each other. When two triangles ftand on the fame bale,and on the fame iide of it, the vertex of the oneIhall either fall outlide of the other triangle, orwithin it; or, laftly, on one of its lides. llructed fo… … which is abfurd. fides equal at both extremities of the bafe. Q. E. D. BOOK I. PROP. Fill. THEOR.

Euclid's Elements · Geometry

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