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
I suggest you forget about memorizing fancy names - which really serve no useful purpose - and just call them "20-sided polygon", "21-sided polygon", etc.
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
The name of a 21 sided polygon is Icosihenagon.
21 sided polygon: icosikaihenagon or henicosagon
The name of a 21 sided polygon is Icosihenagon.
Icosagon
Icosikaihenagon
An icosikaihenagon is a polygon with 21 sides. The prefix "icosi-" denotes twenty and the suffix "-henagon" refers to a polygon with a specified number of sides. The interior angles of an icosikaihenagon sum up to 3240 degrees, calculated using the formula (21-2) * 180.
icosihenagon
The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.
I suggest you forget about memorizing fancy names - which really serve no useful purpose - and just call them "20-sided polygon", "21-sided polygon", etc.
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.