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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 275

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 275 — [IMILAR poly-gons may be di-vided into thefame number offimilar triangles, eachfimilarpair of which are propor-tional to the polygons; andthe polygons are to each otherin the duplicate ratio of theirhomologous /ides. … Draw and and and ———- j refolvingthe polygons into triangles.Then becaufe the polygons are fimilar,and ——

Geometry

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