irregular
Shapes that do not have equal sides is called a quadrilateral. They include an irregular quadrilateral, rectangle, or a parallelogram.
It is an irregular shape or polygon that doesn't have all sides equal
A shape with 8 equal sides is called a regular octagon.
It is an IRREGULAR shape.
Names for shapes that have equal sides are called EQUILATERAL.
A triangle that has no equal sides is called scalene.
An irregular heptagon.
If it has four equal sides, then two parallel sides implies two PAIRS of parallel sides. The shape is a rhombus.
A regular polygon
a circle
pentagon
A rhombus by definition has 4 equal sides. So does a square.