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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 66

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 66
B … each of the circles, the straight line BD falls within each (^2. 3.)of them: and their centres are (Cor. 1. 3.) in the straight line GHwhich bisects BD at right angles; therefore GH passes throughthe point of contact (11. 3.); but it does not pass through it, be-cause the points B, D are without…

Mathematics, Greek · Geometry · Trigonometry

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