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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 123

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 123 — touch one a7io If it be polTible, let join the centres, and not pafs through a point of contadl; then from a point ofcontad: draw -^^^== and ■••^■^- -• to the centres. Becaufe and .and • . + (B. I. pr. 20.), = (B. I. def. 15.), = ^ (B. I. def. 15.), + , a part greater than the whole, which is… … FIGURE III.

Euclid's Elements · Geometry

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