Audsley, W. (William), 1833-1907, Audsley, George Ashdown, 1838-1925 · London ; Glasgow ; Edinburgh : William Mackenzie · leaf 517
perpendiculars has been found, by the foregoing method. Thus, one edge of the triangle,a b (fig. 7), being set to the perpendicular found, and the edge of the rule, c d, applied to thebase, if the triangle be slid along the edge of the rule, its side, a b, will run parallel to the lineto which it… … Problem III. To draw a perpendicular to a given line from a given point without the line.First.—When the point is conveniently near the middle of the line. 1. Let a b (fig. 8) be the line, and c the point without it. On c, as a centre, with aconveniently long radius, describe an arc, cutting the…
Architecture, Domestic · Architecture, Gothic
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