Not regular. Has many meanings in mathematics.
A regular shape has all sides equal and all angles equal.
So an irregular shape has at least one side different to the other sides, or angle different to the other angles.
This is an irregular pentagon:
Not regular. Has many meanings in mathematics.
A regular shape has all sides equal and all angles equal.
So an irregular shape has at least one side different to the other sides, or angle different to the other angles.
This is an irregular pentagon:
