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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 227

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 227
each of thestraight lines drawn from the point K tothe line GH may be proved to be equal tothose which are drawn from the centre of the circle AB to its circumference, and are therefore all equal to one another. Therefore the line GH is thecircumference of a circle, (15. def. 1.) of which the… … BOOK XII. THE ELEMENTS OF EUCLID. 225

Mathematics, Greek · Geometry · Trigonometry

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