A system of geometry and trigonometry : with a treatise on surveying (1830)
Flint, Abel, 1765-1825, Gillet, George, Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Hartford : Cooke & Co. · leaf 75
he same area will be contained in severaldifferent products in the columns of areas ; but in the final re-sult, one column being subtracted from the other will leavewhat is included within the boundary lines of the field. * Much the most convenient method is to place the course at whichyou begin to… … 3 4-\8 Demonstration. .See Fig. 63, and Ex- *J> AMPLE II. -J i U 9\iff I The area standing against the 9th course,* which is wherethe calculation begins, is the triangle 12K, all without thefield. The area against the 10th course is the trapezoid 2KL3,also without the field. The area against the…
Surveying · Geometry · Trigonometry
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