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 67
i in r, and/pin s ; make A ni equal to A r, and h p equal to h s ; then r mand 5 /> will be the axes required, by which the ellipsis may bedrawn in the usual way. 126.— To describe an ellipsis, whose axes shall be propor-tionate to the axes of a larger or smaller given one. Let acbd, {Fig. 91,)… … the conjugate axis required, and will bear the same proportion toij, asc d does to a b. (See Art. 108.)
Carpentry · Architecture
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
