The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 86
sum of B and D. From each of thesetwo equals, making the like quantity J?, the remainders, A and AMERICAN HOUSE-CARrEXTEK. •ri 2), are equal. Thus, it is proved for the angle at d; it is alsotrue for any other angle; for, since all other inscribed angleson that side of the chord line, cf, equal the… … Fi*. 114. angle, a cf ; for, from any point, n, (Fig. 114,) in the arcc nf, draw lines to d,/and c; now, if it can be proved t^atthe angle a of equals the angle f n c, the entire propositionis proved, for the angle f n c equals any of all the inscribedangles that can be drawn on that side of the…
Carpentry · Architecture
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