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 64
er 2 ; to 2 m, and 3 A: to 3 n ; throughthe points, a, n, m, I and c, trace a curve, and the ellipsis willbe completed. The greater the number of divisions on a e, &c., in this-andthe following problem, the more points in the curve can be found,and the more accurate the curve can be traced. If… … 118.— To describe an ellipsis by intersection of lines. 7 Lei Ri) PRACTICAL GEOMETRY. a b and c d, (Fig. 83,) be given axes. Through c draw / «-,parallel tc a b ; from a and 6, draw a /and b g, at right anglnsto a 6 ; divide f a, g b, a e and e 6, each into a like number ofequal parts, as at 1, 2,…
Carpentry · Architecture
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