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 407
Therefore, the triangle A having thesame angles as the triangle B^ the length of the sides of oneare in like proportion as the length of the sides in the other{Art. 361). So— CG : EG : . GF \ GD, Hence, as the product of the means equals the product ofthe extremes {Art, 373), E G multiplied by GF… … Draw the diagonals A B and CD {Fig. 271). It will here beperceived that the two triangles A E O and ACD are homol-ogous, having like angles and proportionate sides. Two ofthe sides of one triangle lie coincident with the two corres-ponding sides of the other triangle, therefore the containedangles…
Carpentry · Architecture · Building
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
