a pentagon
a shape with 5 equal sides is a pentagon
A pentagon
A regular pentagon has five sides of equal lengths.
a regular pentagon
pentagon
A pentagon.
pentagon
irregular pentagon
Pentagon
a shape with equal sides
A pentagon has 5 sides. Look at a photo of the pentagon building in Washington D.C. and you will see that all 5 sides are equal.
A pentagon has five sides. They may be equal or not.