Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn · leaf 60
field.) Measure DPP with great exactness. Meas-ure the angles • between PP andthe lines from P and P to thecorners of the field. In the triangle PPD, PP andthe angles PPD and PPD areknown; hence, PD may be found.In like manner, PC may be found.Then, in the triangle PDC, PD,PC, and the angle DPC are… … 52 SURVEYING Fields having Irregular Boundary Lines. Let A GBCD (Fig. 32)represent a field having a stream AEFGHKB as a boundaryline. Run the line AB. From E, F, G, H, K, prominentpoints on the bank of the stream, let fall perpendiculars EE,FF, GG, etc., upon AB. Regarding AE, EF, etc., as straight
Surveying
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