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 80
PON a given Jlraight line(—■■—) to confiruB afquare. Draw Draw ■ ing » _L and = (pr. 11. and 3.) II drawn • , and meet- W ~W In 1_ M (conft.) S3 a right angle (conft.) M — = a right angle (pr. 29.), and the remaining fides and angles muftbe equal, (pr. 34.) and .*. mk is a fquare. (def. 27.) Q. E.…
Geometry
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