The Elements of Euclid : viz. the first six books, together with the eleventh and twelfth : the errors, by which Theon, or others, have long ago vitiated these books, are corrected, and some of Euclid's demonstrations are restored : also, the book of Euclid's Data, in like manner corrected (1806)
Euclid, Simson, Robert, 1687-1768, Euclid. Elements. Book 11-12. English. 1806, Euclid. Data. English. 1806, Simson, Robert, 1687-1768. Notes, critical and geometrical. 1806, Simson, Robert, 1687-1768. Elements of plane and spherical trigonometry. 1806 · Philadelphia : Published by Mathew Cary, and sold by J. Conrad & Co., S.F. Bradford, Birch & Small, and Samuel Etheridge, printed by T. & G. Palmer ... · leaf 31
isrequired to make a triangle of which the sides shall be equal toA, B, C, each to each. Take a straight line DE terminated at the point D, but un-limited towards E, andmake ^ DF equal to A,FG to B, and GH equalto C; and from the centreF, at the distance FD, de-scribe the circle DKL;and from the… … a 3.1. .Post. 30 THE ELEMENTS Book I. equal ^ to FK ; but FD is equal to the straight line A ; there-^—>r— fore FK is equal to A: again, because G is the centre of thecl5.Def. circle LKH, GH is equal « to GK ; but GH is equal to C;therefore also GK is equal to C; and FG is equal to B; there-fore…
Euclid's Elements · Mathematics, Greek · Geometry
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