A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 78
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.…
Surveying · Navigation
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