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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 30

An illustration from 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, leaf 30
Fig. 22. … 57.—The axis of a cone is a right line passmg 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 6, Fig. 23.) 59.—A parabola is described if a cone be cut…

Carpentry · Architecture

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