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
n arc andits chord. {A, Fig. 21.) 53.—A sector is any part of a circle bounded by an arc andtwo radii, drawn to its extremities, (i?, Fig, 21.) 54.—A quadrant^ or quarter of a circle, is a sector having aquarter of the circumference for its arc. (C, Fig. 21.) 55.—A tangent is a right line, which in… … Fig. 22.
Carpentry · Architecture
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