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 29
60.—An hyperbola is described if a cone be cut by a plane,parallel to any plane within the cone that passes through itsvertex, (e h, Fig. 23.) 61.—Foci are the points at which the pins are placed in de-scribing an ellipse. (See Art. 115, and/, /, Fig. 24.) u AMERICAN HOUSE-CARPENTER. … 62.—The transverse axis is the longest diameter of theellipsis, (a 6, Fig. 24.) 63.—The conjugate axis is the shortest diameter of theellipsis ; and is, therefore, at right angles to the transverse axis,(e d, Fig. 24.) 64.—The parameter is a right line passing through the focusof an ellipsis, at…
Carpentry · Architecture
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
