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 47
hain be-gins or ends, according as you are ascending or descendinga hill; which point may be ascertained by a plummet and line. CASE II. To survey/ afield in the form of a trajpezium. Measure the seA^eral sides, and a diagonal between two op-posite angles ; protract the field, and find the area by… … to protract this trapezium. Draw the side AB, the given length; Avith the diagonalAC 28 and the side BC 11.70 describe cross arcs as at C,from A and B as centres ; and the point of intersection willrepresent that corner of the field : then, with the side CD31.50 and the side AD 14.70, describe…
Surveying
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