The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 37
From the angular point, a, with any radiusdescribe the arc, be; and with the same radius, on the line, d e, 20 AMERICAN HOUSE-CARPENTER. and from the point, c?, describe the arc,/^; take the distance, b c, and upon g, describe the small arc at/; join/and d ; and the angle, e df, will be equal to… … Fig. 34. 77.— To bisect an angle. Let a b c, {Fig. 34,) be the angle to be bisected. Upon b, with any radius, describe the arc, a c ; upon a and c, with a radius greater than half a c, describe arcs cutting each other at d ; join b and d; and b d will bisect the angle, a 6 c, as was required. This…
Carpentry · Architecture
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