Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 75
s drawn from the extremities of the diameter, ac, to the given point, b ; the angle formed at that point by theselines, is a right angle. Join the point, 6, and the centre, d ; thelines, d a, d b and d c, being radii of the same circle, are equal;the angle at a is therefore equal, (Art. 142,) to… … Fig. 108. 157.—Proposition. The square of the hypothenuse of aright-angled triangle, is equal to the squares of the two remainingsides. Let a b c, {Fig: 108,) be a given right-angled triangle,having a square formed on each of its sides: then, the square, b e, isequal to the squares, h c and g b,…
Carpentry · Architecture
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