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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 42

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 42 — Becaufe ———. = ___ (confl:.)and ^—i— common to the two triangles and (confl:.), A (Pr. 8.) Q. E. D. 10 BOOK I. PROP. X. PROB. O bifefi a given finite Jiraightline ( ««■■■■). … and common to the two triangles. Therefore the given line is bifecled. Qj. E. D. BOOK I. PROP. XL PROB. ii

Geometry

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