A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 308
t parts byfences starting from P and Q.Divide the trapezoid, as abovedirected, into three equivalenttrapezoids by the lines E Eand G H. These three trap-ezoids must now be transformed, thus : Join E P, and from Fdraw F K parallel to it. Join P R, and it will be one of the divis-ion-lines required.… … * If a line be drawn joining the middle points of the parallel bases of a trape- 294 LAND-SUR VEYING. Fig. 327.G Division of Quadrilaterals.443. By Lines parallel to a Side. Let ABCD be a quadri-lateral which it is required to divide, by a line E E, parallel to A D, into two parts, BEFCand E F D A,…
Surveying
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