The first six books of the Elements of Euclid, in which coloured diagrams and symbols are used instead of letters .. (1847)
Euclid, Byrne, Oliver · London, W. Pickering · leaf 175
BOOK IV PROP. XV PROP. O infcribe an equilateral and equian-gular hexagon in a given circle H3 O- From any point in the circumference ofthe given circle defcribe ( pamng O through its centre, and draw the diameters and draw 9 9 ......... , --..-.--? ......... 9 &c. and the required hexagon is… … Since
Geometry
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