Table of Contents

## What is a polygon?

**dimensional**shape formed with straight lines.

**Triangles**,

**quadrilateral, pentagon and hexagon**are all examples of polygons.

A **regular polygon** is a polygon in which all sides of the polygon are of equal length.

We have a mathematical formula so that the area of a regular polygon can be calculated.

Area = (ln * ln * n / 4 * (tan (180 / n))

Where

ln = Length of edge of polygon

Number of sides in a polygon =

tan = touch function in degrees

### Area of Triangle in Java

import java.io.*;

import java.util.*;

class Area

{

public static void main(String []args)

{

Scanner ob=new Scanner(System.in);

int l,h;

l=ob.nextInt();

h=ob.nextInt();

System.out.println(“enter value l and h”);

double t=0.5*l*h;

System.out.println(“Area of Triangle:”+t);

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