The American house carpenter: a treatise upon architecture, cornices and mouldings, framing, doors, windows and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 61
r 2 ; to 2 m, and3 k to3 n; throughthe points, a, n^ 7n, 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 pins… … 118.— To describe an ellipsis by intersection of lines. Let PRACTICAL GEOMETRY. 45 a b and c d, {Fig. 83,) be given axes. Through c, draw f g,parallel to a b ; from a and b, draw a / and b g, at right anglesto ab ; divide f a, g b, a e and e 6, each into a like number ofequal parts, as at 1, 2, 3…
Carpentry · Architecture
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
