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 43
PARALLELOGRAMS upon equal bases, andbetween the same parallels, are equal to one another. Let ABCD, EFGH beparallelograms upon equalbases BC, FG, and be-tween the same parallelsAH, BG; the parallelo-gram ABCD is equal toEFGH. Join BE, CH; and be- B C F G cause BC is equal to FG, and FG to » EH, BC…
Euclid's Elements · Mathematics, Greek · Geometry
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