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
It is called an octagon and an irregular octagon can take any 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
A shape with 9 unequal sides would be called an irregular nonagon or an irregular enneagon.
an irregular polygon
trapezoid
It is called an octagon and an irregular octagon can take any shape.