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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 42

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 42 — Take O bifeB a given reSlilinearangle {^ J. (PJ*- 3-) draw , upon which defcribe ^^ (pr. i.). draw … Becaufe _ = ..^... (confl.)and ^^^— common to the two triangles and (conft.). 4 = (pr. 8.) Q. E. D. 10 BOOK I. PROP. X. PROB. O i>tye^ a given finite Jlraight line [f^^^mmmmwm^.

Euclid's Elements · Geometry

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