A polygon is a plane area which is bounded by straight lines. It has the same number of sides as vertices and is classified according to the number of vertices that it has. That said, in the case of 4, it is called a 4-sided shape - a quadrilateral. Polygons are named using Greek prefices for the number of vertices:3 = triangle
4 = quadrilateral
5 = pentagon
6 = hexagon
7 = heptagon (less commonly, septagon)
8 = octagon
9 = nonagon
10 = decagon
11 = hendecagon (not well known)
12 = dodecagon.
Beyond 12, it is recommended that you simply use the number: for example "37-gon" for a polygon with 37 vertices. The exception are
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what is 12 different kind of polygon
No but a rhombus is a polygon. A polygon can have three of more sides, and these can be of different lengths.
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
Another word is shape. A polygon is a shape with different kinds of sides.
The formulas for a polygon depend on the particular figure. A polygon can be a rectangle, triangle, pentagon, or many other plane figures. So, the formulas for area and volume will be different depending on the type of polygon you have.