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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 95

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 95
extremities of the other four, and be described about the equi-lateral and equiangular pentagon ABCDE. Which was to bedone. PROP. XV. PROB. To inscribe an equilateral and equiangular hexagonin a given circle.^ Let ABCDEF be the given circle; it is required to inscribe anequilateral and equiangular… … BOOK IV. THE ELEMENTS OF EUCLID. points B, F; and join AB, BC, CD, DE, EF, FA: the hexagonABCDEF, is equilateral and equiangular. Because JG is the centre of the circle ABCDEF, GE is equal toGD: and because D is the centre of the circle EGCH, DE isequal to DG; wherefore GE is equal to ED, and the…

Mathematics, Greek · Geometry · Trigonometry

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