Answer:
Irregular Polygons
Step-by-step explanation:
Let's us first learn the definition of a polygon. A polygon is a closed shape figure that has a minimum of three sides and three vertices. The term ‘poly’ means ‘many’ and ‘gon’ means ‘angle’. Thus, polygons have many angles. The perimeter and area of polygon depend upon its types.
The classification of polygons is described based on the numbers of sides and vertices. For example, a polygon as four sides and four angles, then it is quadrilateral. The polygons up to 12 sides are the important ones. We are going to learn here polygon’s types based on the number of sides of the closed figure along with examples and diagrams.
Polygons are classified into various types based on the number of sides and measures of the angles. They are:
- Regular Polygons
- Irregular Polygons
- Concave Polygons
- Convex Polygons
- Trigons
- Quadrilateral Polygons
- Pentagon Polygons
- Hexagon Polygons
- Equilateral Polygons
- Equiangular Polygons
In a regular polygon, all the sides of the polygon are equal, and all the interior angles are the same. For example, a regular hexagon has six equal sides, and all its interior angles measure to 120 degrees.
A polygon with an irregular shape. It means the sides and angles of the polygon are not equal.
In a convex polygon, the measure of the interior angle is less than 180 degrees. It is exactly opposite to the concave polygon. The vertices of a convex polygon are always outwards
In a concave polygon, at least one angle measures more than 180 degrees. The vertices of a concave polygon are inwards as well as outwards.
Trigons are polygons who have three sides. They are nothing but triangles. These trigons or triangles are further classified into different categories, such as:
- Scalene Triangle: All sides are unequal
- Isosceles Triangle: Two sides are equal
- Equilateral Triangle: All the three sides are equal and all angles measures to 60 degrees.
Quadrilateral polygon is also called a four-sided polygon or a quadrangle. The different types of the quadrilateral polygon are square, rectangle, rhombus and parallelogram.
The five-sided polygon is called pentagon polygon. When all the five sides of the polygon are equal in length, then it is called regular pentagon otherwise irregular pentagon.
Another type of polygon is the hexagon which has 6 sides and 6 vertices. A regular hexagon will have equal 6 sides and all its interior and exterior angles also measure equals.
The polygons whose all the sides are equal are called equilateral polygons, for example, an equilateral triangle, a square, etc.
The polygons whose all the interior angles are equal such as a rectangle are called equiangular polygons.
(Note that -8 is not included)
. Note that the value of 4 is not included since it is opened.