There is no such thing as a nine sided pentagon. A pentagon has 5 sides; no more, no less.
It is a Pentagon.
A pentagon is a 5 sided polygon
A five sided shape is called a pentagon.
pentagon
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
The name of a 5 sided polygon is Pentagon.
a pentagon
pentagon
pentagon
Pentagon.
a pentagon
a pentagon