Well, for it to be a polygon it has to have: 1. Have straight sides ( circle is not a polYgon) 2. Have connect lines to form a figure 3. Must at least have 3 lines( triangles a polygon)
Irregular polygons have three or more straight sides forming the boundaries of the polygon. At least one of the sides or one of the angles is different from the others.
It'sSideVertexAngleDiagonalPerimeterArea
A regular polygon has a center, much as a circle does. There are also the sides which are all the same lengths. Then there is the apothem which is any segment that goes from the center and is perpendicular to one of the polygon's side. Then angles are also parts and they are all the same. You might consider the perimeter a part and of course it is the sum of the sides.
what is 12 different kind of polygon
If you mean an irregular polygon, it is a polygon with sides of different length or angles of different measure (or both).
No but a rhombus is a polygon. A polygon can have three of more sides, and these can be of different lengths.
diffarant types of polygon
The answer depends on the polygon itself and what information you have about it. There are different formulae for different situations.
It is an irregular polygon
A regular polygon has equal sides and same sizes of interior angles whereas an irregular polygon has sides of different lengths and different sizes of interior angles
The star is a polygon, but not a simple one. It is not simple because parts of the lines forming its boundaries are inside the star. The outline of a star is a simple polygon.