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 68
128.— To describe an hyperbola by intersection of lines.Let r o, (Fig. 94,) be the height, p p the base, and n r the trans-verse axis. (See Fig. 79.) Through r, draw a a, parallel to pp ; from p, draw a p, parallel to r o ; divide a p and p o, eachinto a like number of equal parts ; from each of…
Carpentry · Architecture
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