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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
ef. 48. PRACTICAL GEOMETRY. 27 heads, window-heads, &c., to rather better advantage than Art,87. For instance, let a 6, (Fig. 49,) be the width of the open-ing, and c d the height of the arc. Extend c d, and make d eequal to /; d ; join a and e, also e and b ; and proceed as direct-ed at Ari 89. … 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…

Carpentry · Architecture

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