The elements of Euclid for the use of schools and colleges; comprising the first six books and portions of the eleventh and twelfth books; (1903)
Euclid, Todhunter, I. (Isaac), 1820-1884, ed. edt, Simson, Robert, 1687-1768, ed. edt · London; New York, Macmillan · leaf 175
ing /.DBF = the remaining ^BAD, [Ax.S. which is in the alternate segment of the circle. (2) Because ABCD is a quadrilateral in a circle, the anglesBAD, BCD together = two right angles. [III. 22. But the angles DBF, DBE together-two right angles; [1.13..-. the angles DBF, DBE together-the angles… … 164 EUCLIDS ELEMENTS. Proposition 33. Problem. On a given straight line to describe a segment of a circle, contain-ing an angle equal to a given rectilineal angle. Let AB be the given straight line, and C the given recti-lineal angle: it is required to describe on AB a segment of a circle…
Euclid's Elements · Geometry · Mathematics, Greek
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![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-193-113.webp)
