Hendecagon
An 11 sided polygon is an undecagon
a heptagon is a shape with 11 sides!
An eleven sided shape is called a hendecagon.
a shape with eleven sides is called a undecagon
A polygon having eleven sides can be called a hendecagon or an undecagon. It can also be called an 11-gon.
A shape w/ 11 sides is called a hendecagon.
The name of an eleven sided geometric shape is a Hendecagon or endecagon.
Two-dimensional: Pentagon Three-dimensional: Pentahedron
A hendecagon or an undecagon is the name of a polygon which has eleven sides.
An eleven sided polygon (2D shape with straight sides) is called a Hendecagon.I often set this as a research puzzle for my mathematics classes!
It is called Enneagon for eleven sides.