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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 87

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 87
ing angle DEF; in like manner, the angle LNM may be demon-strated to be equal to DFE: and therefore the remaining angleMLN is equal (32. 1.) to the remaining angle EDF: whereforethe triangle LMN is equiangular to the triangle DEF: and it isdescribed about the circle ABC. Which was to be done. PROP.… … BOOK IV. THE ELEMENTS OF EUCLID. 85 r

Mathematics, Greek · Geometry · Trigonometry

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