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 159
BOUT a givencircle O to circumfcribe a triangle equi-angular to a given triangle. … Produce any fide , of the given triangle both ways ; from the centre of the given circle drawany radius. Make = A (B. 1. pr. 23.) and At the extremities of the three radii, draw and ——.— ? tangents to thegiven circle. (B. 3. pr. 17.) The four angles of Z. 9 taken together, are equal to four right…
Geometry
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.
