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 210
BOOK XII. THE ELEMENTS OF EUCLID. 2or … EHG equal (4. 1.) and similar to the triangle KDL; for thesame reason the triangle AEG is also equal and similar to thetriangle HKL. Therefore the pyramid of which the base is thetriangle AEG, and of which the vertex is the point H, is equal(C. 11.) and similar to the pyramid the base of which is…
Mathematics, Greek · Geometry · Trigonometry
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