Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 80
if not, one of them isthe greater: let BGC be the greater, and at the point G, in the straightline BG, make the angle (23.1.) BGK equal to the angle EHF. Andbecause equal angles stand upon equal arches (26. 3,),vyhen they.areat the centre, the arch BK is equal to the arch EF: but EF is equalto…
Euclid's Elements · Geometry · Trigonometry
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