A system of geometry and trigonometry, with a treatise on surveying; in which the principles of rectangular surveying, without plotting, are explained (1835)
Flint, Abel, 1765-1825, Gillet, George · Hartford, Belknap & Hamersley; New York, Cooke & Co. · leaf 24
Draw the line AB equal to the longest side of the rectan-gle ; on B erect a perpendicular the length of the shortestside to C; from C, with the longest side, and from A, withthe shortest side, describe arcs intersecting each other atD, and draw the lines AD and CD. GEOMETRY. PROBLEM XVIII. To… … Draw lines from A to B and from B to D ; bisect thoselines by problem II. and the point where the bisecting linesintersect each other, as at C, will be the centre of the circle. PROBLEM XIX. To find the centre of a circle. By the last problem it is plain, that if three points be anywhere taken in…
Surveying
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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-81-57.webp)
