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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 61

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 61
ne another interthe point C: they have not the same centre. For, if they can, let it be F; join FC, and draw any straiFEB meeting them in E and B^ and C because F is the centre of the circleABC, CF is equal to FB; also, be-cause F is the centre of the circleCDE, CF is equal to FB: and CFwas shown… … B PROP. Vn. THEOR. If any point be taken in the diameter of a circle,which is not the centre, of all the straight lines whichcan be drawn from it to the circumference, the great-est is that in which the centre is, and the other part ofthat diameter is the least; and, of any others, that BOOK III.…

Mathematics, Greek · Geometry · Trigonometry

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