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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 247

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 247
AB, shall be equal to AC, orBD. If EF be not equal to AC, one of them must be greaterthan the other; let AC be the greater; then, because FE isless than CA, the straight line CFD is nearer to the straight lineAB at the point F than at the point C,that is, CF comes nearer to AB fromthe point C to F:… … BOOK I. NOTES. 245

Mathematics, Greek · Geometry · Trigonometry

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