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 28
Fig. 22. 57.—The axis of a cone is a right line passing through it, fromthe vertex to the centre of the circle at the base. 58.—An ellipsis is described if a cone be cut by a plane, notparallel to its base, passing quite through the curved surface.(a b, Fig. 23.) 59.—A parabola is described if a…
Carpentry · Architecture
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