A 20-sided polygon is called an icosagon. http://www.math.com/tables/geometry/polygons.htm
A 20-sided polygon is called an icosagon.
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)
The name of a 20 sided polygon is Icosagon.
The name of a 20 sided polygon is Icosagon.
A 20-sided polygon is called an icosagon.
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)
The name of a 20 sided polygon is Icosagon.
The name of a 20 sided polygon is Icosagon.
A 20-sided polygon is called an icosagon.(see related link for list)
N-gon is the name of 13-20 sided polygon.
An icosagon is the name of the 20 sided polygon.
18. If a polygon has n sides, then it has n-2 triangles.There are 18 triangles in a 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.
20 of them.
Dodecahedron. <-- wrong a dodecahedron is a 3 dimensional shape having 12 faces. a 20-sided polygon is an icosagon