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 589
Fig. 338. Fig. 339. A trigon is a polygon of three sides {Figs. 330 to 333); atetragon has four sides {Figs. 334 to 339); a pentagon has five{Fig. 340); a hexagon six (Z^^^. 341); a heptagon seven (F/^.342); an octagon eight (i^^^. 343); a nonagon nine ; a decagonten ; an undecagon eleven ; and a… … Fig. 340. Fig. 341. Fig. 342. Fig. 343. A circle is a figure bounded by a curved line, called thecircumference, which is everywhere equidistant from a cer-tain point within, called its centre. The circumference is also called the periphery, and some-times the circle. PARTS OF THE CIRCLE. 547 The…
Carpentry · Architecture · Building
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