Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 192
x.<^~- … XJ. Fig. 103. such as hi at (1). Immediately on passing the obstructionon one of the auxiliary lines, a line should be traced on themeasured angle or its supplement, as may be required, andtraced to intersect the other auxiliary line. The angle made bythese lines should be measured at the point of…
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