Heptagon

The heptagon, or hag, is a polygon with 7 sides. A regular heptagon has equal sides and equal angles.

Vertex coordinates
Coordinates for a heptagon of edge length 2sin(π/7), centered at the origin, are:


 * (1, 0),
 * (cos(2π/7), ±sin(2π/7)),
 * (cos(4π/7), ±sin(4π/7)),
 * (cos(6π/7), ±sin(6π/7)).