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 50
gular hexagon is exactly equal to theradius of the circle that circumscribes the figure. For theradius is equal to a chord of an arc of 60 degrees; and, asevery circle is supposed to be divided into 360 degrees, thereis just 6 times 60, or 6 arcs of 60 degrees, in the wliole circum-ference. A line… … (Fig. 57,) be the given square. Draw the diagonals, a d andb c / upon a, b, c and d, with a e for radius, describe arcs cut-ting the sides of the square at 1, 2, 3, 4, 5, 6, 7 and 8 ; join 1and 2, 3 and 4, 5 and 6, &c., and the figure is completed. In order to eight-square a hand-rail, or any…
Carpentry · Architecture
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