The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 58
Tig. 78. AMERICAN HOUSE-CARPENTER. ,« a ct will be the diameter of a circle, C, which will be equal inarea to the two circles, A and B, added together. Any polygonal figure, as A, (Fig. 72,) formed on the hypo-thenuse of a right-angled triangle, will be equal to two similarfigures,* as B and C*,… … Fig. 73 105.— To construct a square equal to a given rectangle.Let A, (Fig. 73,) be the given rectangle. Extend the side, a 6,and make b c equal to b e ; bisect a c in/, and upon f, with theradius, / a, describe the semi-circle, age; extend e b, till itcuts the curve in g ; then a square, b g h d,…
Carpentry · Architecture
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