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 (1834)
Euclid, Euclid, Simson, Robert, 1687-1768 · Philadelphia : Desilver & Thomas · leaf 19
III. THEOR. If two triangles have two sides of the one equal totwo sides of the other, each to each, and have likewisetheir bases equal; the angle which is contained by thetwo sides of the one vshall be equal to the angle con-tained by the two sides equal to them, of the other. Let ABC, DEF be Atwo… … BOOK I. THE ELEMENTS OF EUCLID. ir For, if the triangle ABC be applied to DEF, so that the pointB be on E, and the straight line BC upon EF; the point C shallalso coincide with the point F. Because BC is equal to EFjtherefore BC coinciding with EF, BA and AC shall coincide withED and DF; for, if…
Mathematics, Greek · Geometry · Trigonometry
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