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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 186

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 186
mcontained by the two triangles CGF, DAE, and the three parallel-ograms CA, GE, EC, is equal (C. 11.) to the prism contained bythe two triangles CBF, DHE, and the three parallelograms BE,CH, EC; because they are contained by the same number of equaland similar planes, alike situated, and none of… … See Note. 184 THE ELEMENTS OF EUCLID. BOOK XI. tioned in the next and some following propositions, are the sidesof the parallelograms betwixt the base and the opposite plane pa-rallel to it. PROP. XXIX. THEOR. Solid parallelopipeds upon the game base, and of thesame altitude, the insisting Hues of…

Mathematics, Greek · Geometry · Trigonometry

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