The elements of Euclid for the use of schools and colleges; comprising the first six books and portions of the eleventh and twelfth books; (1903)
Euclid, Todhunter, I. (Isaac), 1820-1884, ed. edt, Simson, Robert, 1687-1768, ed. edt · London; New York, Macmillan · leaf 250
rtionals; and those which areopposite to the equal angles are homologous sides, that iSy are theantecedents or the consequents of the ratios. Let the triangle ABO be equiangular to the triangle DCE, having the angle ABC equal to the angle DCE, and the angle ACB equal to the angle DEC, and… … B C E Proof. (1) Let the A DCE be placed so that CE may becontiguous to BC, and in the same straight line with it, andD and A on the same side of BCE. [I. 22. Because the ^ABC, ACB are together < two right z.^ [I. 32.and that the ^ACB = the /.CED; [Hypothesis. .. the angles ABO, OED are…
Euclid's Elements · Geometry · Mathematics, Greek
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