Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 265
Problem 2. To cut off from a triangular field a givenarea, by a line parallel to the base. 276 SURVEYING … Let ABC (Fig. 45) be the triangle, andlet DE be the division line required. Then ABC : ABE = AB2 : AD2.•• VaBC : Va~DE = AB : AD. AD = AB VI ADE BC iC Problem 3. To cut off from afig. 45 triangular field a given fraction of the field, by a line from a given point in a side. Let ABC (Fig. 46) be the…
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