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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 51

An illustration from 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, leaf 51
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 JB, added together. Again : if a… … the side of a given square, c a, placed at right angles to o 6, be theside of another given square, and c d, placed at right angles to PRACTICAL GEOMETRY. 35 c b, be the side of a third given square; then the square, Atformed upon the line, d b, will be equal to the three givensquares. (See Art.…

Carpentry · Architecture

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