An undecagon has 11 sides.
An undecagon is an 11 sided polygon
undecagon has 43 diagonals (answer by erwin handsome)
a undecagon has eleven sides and angles.
An undecagon, or figure with 11 sides. has an interior angle of 147o
a shape with eleven sides is called a undecagon
There are 11 triangles in an undecagon. The number of sides of a polygon is the number of triangles it has.
An undecagon is an 11 sided shape and its interior angles add up to 1620 degrees
An undecagon
Hendecagon or undecagon
ten
undecagon.