A system of geometry and trigonometry : with a treatise on surveying ... in which, also, the principles of rectangular surveying ... are fully explained: with a complete series of mathematical tables, and the necessary explanations (1830)
Flint, Abel, 1765-1825, Gillet, George, Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Hartford : Cooke & co. · leaf 78
se to be 70 rods ; divide 140by 35 the half of DG, and the quotient 4 will be the length ofthe perpendicular of a triangle, whose base is 70 and the area140. Lay off 4 rods from G to i, and draw the line DI, whichwill be the dividing line.* Example If. See Fig. 68. Let ABCD, &c. be a tract… … FIELD BOOK. Rods. AB. N. 19° 0 E. 108 BC. S. 77 0 E. 91 CD. S. 27 0 E. 115 DE. S. 52 0 W. 58 EF. S. 15 30 E. 76 Rods. FG. West 70.9 GH. N. 36° 0 W. 47HI. North 64.3 I A. N. 62 15 W. 59Acres Rood RodsWhole area 152 — 1 — 25 Find the area of the part lABC, according to section III.page 57, as follows…
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-308-201.webp)
