Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 36
Fig. 66. … the circle F H. Within this circle describe a regular hexagon by the precedingproblem ; the figure will touch the given circle as required. To construct a regular octagon upon a given straight line (Fig. 67). Produce the given line A B both ways, and draw perpendiculars A E, B F;
Mechanical drawing
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