||last updated: 2005-10-30
The heptagon is the seven-sided polygon, also known as
The heptagon name can be preferred while both the prefix and the suffix are Greek
heptagon is the regular
polygon with seven sides.
The regular heptagon cannot be constructed using the classical Greek rules of
geometric construction, but it can be done using a Neusis construction.
According to Bankoff and Garfunkel (1973), "since the earliest days
of recorded mathematics, the regular heptagon has been virtually relegated to
limbo." Nevertheless, Thébault (1913) discovered many beautiful
properties of the heptagon.