Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 112
In a given circh, to inscribe a regular hexagon and an equilate-ral trianffle. 112 GEOMETRY. … Suppose the problem solved,and that AB is a side of the in-scribed hexagon ; the radii AG,OB being drawn, the triangleAOB will be equilateral. For, the angle AOB is the sixthpart of four right angles ; there-fore, taking the right angle forunity, we shall have AOB = f zzI : and the two other…
Trigonometry · Geometry
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