Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 114
y regular polygons of H, H), S-2j6cr. sides. Andm like manner, by means of the h(.xagon, regular polygons of12, 2 i, 48, &c. sides may be inscribed ; by means of the deca-gon, polygo?iH of 20, 10, HO, A:c. sides ; by means of the pente-dccagon, polygons of ;jO, 00, 120, tVc. sides. It is… … A regular inscribed polygon being given, to circumscribe a similar polygon about the same circle. Let CBAFED be a regular polygon. At T, the middle pointof the arc AB, apply thetangent GH, which willbe parallel to AB (BookIII. Prop. X.) ; do thesame at the middle pointof each of the arcs BC,CD,…
Trigonometry · Geometry
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