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 54
[IVEN three right lines < ■•••■■- the fum of anytwo greater thanthe third, to conJlruEl a tri-angle whoje fides fliall be re-fpeSlively equal to the givenlines. … BOOK I. PROP. XXIII. PROB. 23
Geometry
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