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 90
B. but e_j = EJ+M+ |+ twice ■■ » ■—■. Q. E. D. 58 BOOK II. PROP. V. PROB. … F a Jlraightline be divided into two equalparts andalfo ———-——into two unequal parts,the rectangle contained bythe unequal parts, together with the fquare of the line betweenthe points offeclion, is equal to the fquare of half that line
Geometry
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.