This document introduces polygons as two-dimensional objects made up of three or more straight line segments that meet at vertices to form a closed figure. Regular polygons are defined as those with equal angles and side lengths, such as equilateral triangles and squares. The document provides examples of different types of polygons including triangles, quadrilaterals, and polygons with 5 or more sides, as well as terms like sides, vertices, regular, irregular, convex, and concave.

1. WELCOME
TO THE WORLD OF POLYGONS

2. POLYGONS
 A two diamentional object
 A closed figure

3. MORE ABOUT POLYGONS
1. Made up of three or more straight line segment.
2. There are exactly two sides that meet at vertex.
3. The sides do not cross each other .

4. Example :
 Triangle Rectangle
Square

5. TheSe are not polygons

6. Terms
 Side : One of the line segments that make up polygons
 Vertex : Point where two sides meet

7. Regular Polygons
 A polygon where all the angles are equal and all of the
sides are the same length. They are both equilateral
and equiangular

8. Example
 Equilateral Triangle Square

9. Types of polygon
 Regular Polygons
 Irregular Polygons
 Convex Polygons
 Concave Polygons
 Equilateral Polygons
 Equiangular Polygons

10. Triangle - 3 Sides
 There are several types of triangles
 Example : Equilateral, Isoscales, Scalene, Acute angle
etc..

11. Quadrilateral - Four Sides
 Examples :
Square Rectangle Rhombus

12. More polygons
 Pentagon : Five Sides
 Hexagon : Six Sides
 Heptagon : Seven Sides
 Octagon : Eight Sides
 Nonagon : Nine Sides
 Decagon : Ten sides