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 208
ore AD and CF areeach of them equal and parallel to BE.But straight lines that are parallel to thesame straight line, and not in the same b 9.11. plane with it, are parallel to one ano-ther. Therefore AD is parallel to CF; el.Ax.l. and it is equal ^ to it, and AC, DF jointhem towards the same parts… … Therefore, if two PROP. XI. PROB. TO draw a straight line perpendicular to a plane,from a given point above it. a 12. 1. b 11.1. c31.1. d 4. 11. e 8.11. P3. def.11. Let A be the given point above the plane BH; it is requiredto draw from the point A a straight line perpendicular to theplane BH. In…
Euclid's Elements · Mathematics, Greek · Geometry
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