Hendecagon of a regular hendecagon is still impossible even with the usage of an angle trisector. It can, however, be constructed via neusis construction and also via two-fold origami. Close approximations to the regular hendecagon can be constructed, however. For instance, the ancient Greek mathematicians approximated the side length of a hendecagon inscribed in a unit circle as being 14/25 units long. The following construction description is given by T. Drummond from 1800: On a unit circle: The "regular hendecagon" has Dih symmetry, order 22. Since 11 is a prime number there is one subgroup with dihedral symmetry: Dih, and 2
Hampton Sides Hampton Sides (Wade) Hampton Sides (born 1962) is an American historian, author and journalist. He is the author of "Americana," "Hellhound on His Trail," "Ghost Soldiers," "Blood and Thunder," and other bestselling works of narrative history and literary non-fiction. Sides is editor-at-large for "Outside" magazine and has written for such periodicals as "National Geographic", "The New Yorker", "Esquire", "Men's Journal", and "The Washington Post". His magazine work, collected in numerous published anthologies, has been twice nominated for National Magazine Awards for feature writing. A native of Memphis, Sides attended PDS Memphis and Memphis University School, and graduated from Yale with