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 63
t angles : but straightlines Avhich with another straight line make the interior angles d 12. Ax. upon the same side less than two right angles, do meet i if pro-duced far enough: therefore EB, FD shall meet, if produced,towards B, D : let them meet in G, and join AG : then, because e 5.1. AC is… … h 34. t. each of the angles CEB, EBC is half a right angle ; therefore Book II.AEB is a right angle : and because EBC is half a right angle, ^—-v—^DBG is also *■ half a right angle, for they are vertically oppo-fl5. 1.site; but BDG is a right angle, because it is equal ^ to the al-c29. 1.ternate…
Euclid's Elements · Mathematics, Greek · Geometry
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