No, regular polygons are always convex and are shapes constructed using straight lines.concave polygons are irregular.
it has to be made out of strait lines so no curvesand it has to be closedlast it has to be flat it cant be 3D
A rhombus has four sides of equal lengths. So it is an equilateral polygon. But it is not an equiangular. It's angles are not equal in measure.
A closed, plain figure bounded by three or more line segments. These lines cannot be curved and they cannot intersect. A polygon must also fall on a single plane.
It must be a plane figure.It must be closed.It must be bounded by straight lines.These straight lines must not cross one another.