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 75
on equal bafes, and on thefame Jide, are between thefame parallels. If ■ which joins the vertices of trianglesbe not II - , draw ———. II —-~— (pr. 31.), meeting Draw Becaufe (conft.) . ^^^- ^ 1^^^ , a part equal to the whole,which is abfurd. 41 ~^^^^ • ^f^ in the fame manner itcan be demonftrated,… … Draw Then
Euclid's Elements · Geometry
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