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 77
thelength of4he square or length or breadth of the rectangle ; soIS the number of acres proposed to be cut off; to their propor-tion of the length or breadth. PROBLEM II. To cut off any number of acres by a LINE FROM ANY ANGLE OF A TRIANGLE. Measure the base, or side opposite the angle from… … In the triangle ABC, which contains 48 acres, it is requir-ed to cut off 18 acres, by a line proceeding from C to the baseAB, which is 40 chains.As 48: 40 : : 18 : 15 Lay 15 chains on the base from B to D, and draw the lineCD. The triangle will then be divided as was proposed ;BCD containing 18…
Surveying
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