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 54
thirdcourse added to 37° the fourth course is 54*^, which subtractedfrom 180O leaves 126<^, according to rule 3. The fourth andfifth courses are one south and the other north, and bothwest. According to rule 2, 27^ the fourth course added to490 the fifth course, the sum 86^ is the angle at E. A… … 54 SURVEYING. Ch. L. AB. N. 560 15 E. 21.60 EC. N. 26 30 E. 13.44 CD. S. 71 30 E. 18.96 DE. S. 26 30 E. 13.44 EF. s. 71 30 W. 18.96 FG. s. 45 0 E. 8.47 GH. s. 63 30 E. 13.44 HI. N. 45 0 E. 8.47 IK. s. 26 30 E. 13.44 KL. s. 45 0 W. 8.47 LM. s. 63 30 W. 13.44 MN. N. 76 0 W. 24.73 NA. N. 36 45 W. 30.…
Surveying
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