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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 44

An illustration from 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, leaf 44
90. — 1*0 describe a circle u-it kin any given triangle, so thatthe sidfs of the triangle shall be tangical. Let a b c, (Fig.50,) be the given tiiangle. Bisect the angles, a and b, accordingto Art. 77 ; upon d, the point of intersection of the bisectinglines, with the radius d e, describe the… … 91.—About a given circle, to describe an equi-lateral tri-angle. Let a d b c, (Fig. 51,) be the given circle. Draw thediameter, c d ; upon c?, with the radius of the given circle, de-scribe the arc, a e b ; join a and 6 ; draw f g, at right angles tod c ; make/c and c g, each equal to a b ; from/,…

Carpentry · Architecture

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