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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 33

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 33
B … 30 THE ELEMENTS OF EUCLID. BOOK I. PROP. XXX. THEOR. Straight lines which are parallel to the same straightline are parallel to one another. Let AB, CDj be each of them parallel to EF, AB is also paral-lel to CD. Let the straight line GHK cut AB, EF, CD; and because GHKcuts the parallel straight…

Mathematics, Greek · Geometry · Trigonometry

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