A treatise on levelling, topography, and higher surveying (1876)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, b. 1840, ed · New York, D. Appleton and company · leaf 154
pass from the re-quired point to three known points.Thus, in the figure, the point P is de-termined by the angles APB andBPC, the points A, B, and 0, be-ing known. To fix the place of thepoint from these data is known as theproblem of the three points. Itwill be here solved geometrically,… … Fig. 168.
Surveying
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