An irregular shape!
It is an irregular shape or polygon that doesn't have all sides equal
a quadrilateral
A shape with 9 unequal sides would be called an irregular nonagon or an irregular enneagon.
trapezoid
An irregular shape!
Irregular
An irregular hexagon.
It is an IRREGULAR shape.
Not surprisingly, it would be called an irregular galaxy.
It is an irregular shape or polygon that doesn't have all sides equal
There is no formula. That's why it's called irregular!
An octagon. Or more specifically, an irregular octagon.
a quadrilateral
an irregular polygon
trapezoid
A shape with 9 unequal sides would be called an irregular nonagon or an irregular enneagon.