A 16-sided polygon, sometimes also called a hexakaidecagon. The regular hexadecagon is a constructible polygon,
and the inradius 
, circumradius 
, and area 
of the regular hexadecagon of side length 1 are
 |  |  |
(1)
|
 |  |  |
(2)
|
 |  |  |
(3)
|
Hexadecagon
See also
Polygon, Regular Polygon, Trigonometry Angles--Pi/16Explore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Hexadecagon." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Hexadecagon.html