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 69
ltiplied by thesouthings in the column of south areas; add up these twocolumns and subtract the less from the greater; the remain-der will be double the area of the field in square rods orsquare chains and links, whichever measure was used in thesurvey. [In the preceding explanations, the meridian… … 5L->_VH The dotted line A 2 represents the northing, aud the line2 B the easting made by the first course; these multipliedtogether, that is, 77.15x20.74=1600.0910, which is doublethe area of the triangle A2B as is evident from the rule tofind the area of the triangle, prob. IX. Rule I. This…
Surveying
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