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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 67

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 67 — J -dy Q. E. D. 34 BOOK I. PROP. XXXIII. THEOR. … TRAIGHT fines (- and ) which join the adjacent extremities oftwo equal and parallelJiraight~—— and •»..---=.), are themfelves equal and parallel. Draw the diagonal. (hyp.)

Euclid's Elements · Geometry

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