What is an 11 sided polygon called?

In geometry, a polygon is a closed two-dimensional figure with three or more straight lines.

Answer: 11 sided polygon is called Hendecagon.

Let's look at a polygon with 11 sides.

Explanation:

A polygon is said to be regular if it has equal length on all of its sides and with equal angles at each vertex.

Here is the regular polygon with 11 sides.

Polygon with 11 sides is called hendecagon.

Thus, Hendecagon is the name of the polygon with 11 sides.