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 46
90.—To describe a circle within any g^ven t/riangle, so thatthe sides of the triangle shall be iangical. Let a b c, (Fig. 50,)be the given triangle. Bisect the angles a and b, according toArt. 77; upon d, the point of intersection of the bisecting lines,with the radius, d e, describe the required… … 32 AMERICAN HOUSE-CARPENTER. 91.—About a given circle, to describe an equi-lateral tri-angU. Let a d be, (Fig. 51,) be the given circle. Draw thediameter, c d; upon d, with the radius of the given circle,describe the arc, a el; join a and I; draw/ g, at right anglesto d c ; make/ c and c g, each…
Carpentry · Architecture
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