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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 29

An illustration from 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, leaf 29
t either be equal to it, or less;but the angle BAC is not equal to the angle EDF, because thenthe base BC would be equal(4. 1.) to EF; but it is not;therefore the angle BAC is notequal to the angle EDF, nei-ther is it less; because thenthe base BC would be less (24.I.) than the base EP; but it… … PROP. XXVI. THEOR. If two triangles have two angles of one equal to twoangles of the other, each to each; and one side equalto one side, viz. either the sides adjacent to the equal BOOK I. THE ELEMENTS OF EUCLID. 27

Mathematics, Greek · Geometry · Trigonometry

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