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 17
From the point A to B draw*the straight line AB; and upon itdescribe ^ the equilateral triangleDAB, and produce « the straightlines D A, DB to E and F; fromthe centre B, at the distance BC,describe ^ the circle CGH, andfrom the centre D, at the distanceDG, describe the circle GKL. ALchall be equal… … a 1. Post. bl. 1. . c 2. Post, d 3. Post, 16 THE ELEMENTS Book I. Because the point B is the centi-e of the circle CGH, BC is *—V— equal e to BGj and because D is the centre of the ciixle GKL, elS.Def. DL is equal to DG, and DA, DB, parts of them, are equal; i 3. Ax. therefore the remainder AL is…
Euclid's Elements · Mathematics, Greek · Geometry
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