The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)
Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 601
Fig. 365, equal; and the angles dac and dca are equal, because thetriangle adc is d.n isosceles triangle, having its two sides, adand dcy by construction equal; therefore the angles dad anddca are equal. 513.—A Circle and a Tangent Given, to Find the Pointof Contact.—From any point, as a {Fig:… … Fig. 366. dc, draw a line to the centre d; bisect ad at ^; upon e, withthe radius ea, describe the arc a/d; f is the point of con-tact required. If / and d were joined, the line would form right angleswith the tangent dc, (See Art. 352.) A CIRCLE THROUGH GIVEN POINTS. 559 514-,—Throug^li any Three…
Carpentry · Architecture · Building
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