A treatise on surveying and navigation: uniting the theoretical, the practical, and the educational features of these subjects (1852)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst · leaf 80
To find the area of an irregular figure bounded by any numberof right lines. Rule. — Draw diagonals dividing the figure into triangles. Findthe areas of the triangles so formed and add them together for the areaof the whole. Let it be required to find thearea of the adjoining figure offive sides.… … 76 SURVEYING. PROBLEM VIII Jr-£-iMKc To find the area of a long irregularfigure like the one represented in themargin, it is necessary to divide it intotrapezoids. Then find the area of eachone of the trapezoids (by problem V.) and add them together for thewhole area. If however the trapezoids have…
Surveying · Navigation
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