A 20 sided polygon is an 'icosagon'
Icosahedron is a 20 sided polygon.
A 20 sided polygon
A 20-sided polyhedron is an icosahedron. A 20-sided polygon is an icosagon.
The interior angles of a 20 sided polygon add up to 3240 degrees
N-gon is the name of 13-20 sided polygon.
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.
Duodecagon <--wrong... a duodecagon is a 12-sided polygon. icosagon is a 20 sided polygon.
A 20-sided polygon is an icosagon.(see related link)
A 20-sided polygon is called an icosagon.
The name of a 20 sided polygon is Icosagon.
The name of a 20 sided polygon is Icosagon.
An 11 sided polygon is a hendecagon and a 12 sided polygon is a dodecagon
The name of a 11 sided polygon is Hendecagon.
A 20 sided polygon is an 'icosagon'
The term for a 21 sided polygon is an icosikaihenagon. Icosi is the Greek for the numerical 20 and henagon means 1.
see related link below to see the 20 sided polygon