Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

heptagon




regular polyhedron
A polygon with 7 sides. The sum of the interior angles of a polygon is 900°. In the case of a regular heptagon, each interior angle is approximately 128.57°.

The area of a regular heptagon of side length a is (7/4)a2 cot(π/7).


Related category

   • POLYGONS