Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 29
to its base, passing quite through the curved surface,(a 6, Fig. 23.) 59.—A parabola is described if a cone be cut by a plane,parallel to a plane touching the curved surface, (c d, Fig. 23—c d being parallel tofg.) 60.—An hyperbola is described if a cone be cut by a plane,parallel to any plane… … 62.—The transverse axis is the longest diameter of theellipsis, {a b, Fig. 24.) 63.—The conjugate axis is the shortest diameter of theellipsis ; and is, therefore, at right angles to the transverse axis,(c d, Fig. 24.) 64.—The parameter is a right line passing through the focusof an ellipsis, at…
Carpentry · Architecture
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
