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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 45

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 45
edinto any parts in the points D, E; the rectangle contained by thestraight lines A, BC is equal to the B DEC rectangle contained by A, BD, to-gether with that contained by A,DE, and that contained by A, EC. From the point B draw (11. 1.)BF at right angles to BC, and makeBG equal (3. 1.) to A; and… … BOOK II. THE ELEMENTS OF EUCLID, 43

Mathematics, Greek · Geometry · Trigonometry

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