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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 71

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 71 — Draw and ---..-— , ■, by (pr. 34, and hyp.); = and II — (pr. 33.) And therefore but J1.1 is a parallelogram : (pr- 35-) (ax. I.). Q. E. D. 38 BOOK I. PROP. XXXFII. THEOR. … RIANGLES on the fame bafe (• ■) and between the fame paral-lels are equal. Draw Produce \ fpr. ^i (pr- 3I-) 1—M. and ^^ are parallelogramson the fame bafe, and between the fame parallels,and therefore equal, (pr. 35.) T =: twice f ^ twice 4 (■ (pr- 34-) k.i Q. E D. BOOK I. PROP. XXXVIII. THEOR. 39

Euclid's Elements · Geometry

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