A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 295
: FG =EH = 1.909. Finally, AH = AE + EH = 5.81, and DG= df — FG = 1.07. Ex. 2. Given AB S. 62° 50 E. 14.93 ch., BC K 7° 30W.6.29 ch., CD K 62° 50 W. 11.88 ch., DA S. 21 W. 5.18 ch., 292 LAYING OUT AND DIVIDING LAND. [Chap. VII. to determine DG and AH so that a line joining G and Hwill pass through… … Let ABCD (Fig. 193) be the trape-zoid to be divided into two parts AEFDand FEBC having the ratio of twonumbers m and n by a line EF parallelto AD or BC. Construction. l Join CA, and draw DH parallel to it. Join CH. DivideHB in I so that HI : IB :: m : n. Produce CD and BA tomeet in G, and take GE a…
Surveying
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