The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 68
i in r, and/pin s ; make h m equal to A r, and A p equal to h s ; tlien r mand 5 p 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 o-^ smaller given one. Let acbd, {Fig- 91,) be… … Fig. 91. the conjugate axis required, and will bear the same proportion to j, asc d does to a b. (See Art. 108.) 1 2 3 i 3 2 1
Carpentry · Architecture
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