Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 53
Fig. 72. 38 American house-carpenter. a c, will be the diameter of a circle, C, which will be equal in area to the two circles, A and i?, added together. Any polygonal figure, as J[, {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 J., {Fig. 73,) be the given rectangle. Extend the side, a 6,and make h c equal to 6 e ; bisect a c in/, and upon/, with theradius, / a, describe the semi-circle, age; extend e b, till itcuts the curve in g ; then a square, h g h d,…
Carpentry · Architecture
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