Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 155
ylinders are to each other as the product oftheir bases and altitudes (Th. xiv. Cor.), it follows that similarcylinders are to each other as the cubes of the linear dimen-sions. THEOREM XX. Every section of a sphere, made by a plane, is a circle. Let AMB be a section, made bya plane, in the sphere… … BOOK 155 Of the Sphere
Geometry · Plane 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-297-191.webp)
