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 234
e KBOS is in one plane; and if PB, TK be joined, and per-pendiculars be drawn from the points P, T to the straight linesAB, AK, it may be demonstrated, that TP is parallel to KB in thevery same way that SO was shown to be parallel to the same KB;wherefore (9. 11.) TP is parallel to SO, and the… … be drawn straight lines to the point A, there shall be formed asolid polyhedron between the circumferences BX, KX composedof pyramids, the bases of which are the quadrilaterals KBOS,SOPT, TPRY, and the triangle YRX, and of which the commonvertex is the point A: and if the same construction be made…
Mathematics, Greek · Geometry · Trigonometry
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-308-201.webp)
