The name of an eleven sided geometric shape is a Hendecagon or endecagon.
An eleven sided shape is called a hendecagon.
It is a hendecagon.
hendecagon
hendecagon
hendecagon
hendecagon
Two-dimensional: Pentagon Three-dimensional: Pentahedron
It is a Hendecagon (or endecagon).
Yes
It is called either a Sidagon or an Undecagon.
a hen decagon