An icosikaihena is a polygon with 21 sides
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
The name of a 21 sided polygon is Icosihenagon.
The name of a 21 sided polygon is Icosihenagon.
Icosikaihenagon
Though many polygons have a specific name not all do. It is accepted practice to use the number of sides as the name if one is not assigned (or known). A 21 sided polygon does not have a specific name so could quite reasonably be call a 21-ogon.
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
The name of a 21 sided polygon is Icosihenagon.
The names of polygons with sides ranging from 21 to 30 are as follows: a 21-sided polygon is called a icosagon, a 22-sided polygon is a dicosagon, a 23-sided polygon is a tricosagon, a 24-sided polygon is a tetracosagon, a 25-sided polygon is a pentacosagon, a 26-sided polygon is a hexacosagon, a 27-sided polygon is a heptacosagon, a 28-sided polygon is an octacosagon, a 29-sided polygon is a nonacosagon, and a 30-sided polygon is a triacontagon.
The name of a 21 sided polygon is Icosihenagon.
Icosagon
Icosikaihenagon
icosihenagon
The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.
So, the Sum of the interior angles for a 21 – sided polygon is equal to 3420°.
The term for a 21 sided polygon is an icosikaihenagon. Icosi is the Greek for the numerical 20 and henagon means 1.
a triple heptagon.
The sum of the exterior angles of any polygon, regardless of the number of sides, is always 360 degrees. Therefore, the sum of the exterior angles of a 21-sided polygon is 360 degrees.