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 39
s. Let a bj {Fig. 37,) be the given line, and 5 the number of parts. Draw a c, at any angle to a b ; on a c, from a, set off 5 equal parts of any length, as at 1, 2, 3, 4 and c ; join c and b ; through the points, 1, 2, 3 and 4, draw 1 e, 2/, 3 ^ and 4 h, parallel to c b ; which will divide the… … {Fig. 38,) and bisect it Avith the perpendicular, c d ; bisect c dwith the line, e f, as at g ; then g is the centre as was required.
Carpentry · Architecture
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