Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 49
Fig 69. 103.— To make a square equal to two or more given squares.Let A and B, {Fig. 69,) be two given squares. Place them soas to form a right angle, as at a ; join b and c ; then the square,C, formed upon the line, b c, will be equal in extent to the squares,A and B, added together. Again : if a… … the side of a given square, c a, placed at right angles to a b, be theside of another given square, and c d, placed at right angles to PRACTICAL GEOMETRY. 35 c 6, be the side of a third given square ; then the square, A^formed upon the Hne, d b, will be equal to the three givensquares. (See Art.…
Carpentry · Architecture
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