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 158
N a given circle O to place ajlraight line,equal to agivenjlraight line ( ), not greater than the diameter of thecircle. … Draw , the diameter of and if ..-....^—. ^:z ,then the problem is folved. But if be not equal to (hyp-); make (B. I. pr. 3.) withas radius. defcribe I ), cutting f |, and draw ^ which is the line required. For (B. I. def. 15. confl.) Q. E. D. 126 BOOK IF. PROP. II. PROP.
Euclid's Elements · Geometry
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