Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 45
To construct a square equal to Jive times a given square (Fig. 95). Extend the base of the given square, making the extension to d e equal toc d. From e draw a line to a, and on this line construct a square, which willbe the square required.
Mechanical drawing
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