Program to find the Interior and Exterior Angle of a Regular Polygon

Given the number of sides n of a regular polygon. The task is to find out the Interior angle and Exterior angle of the polygon.
Examples: 

Input : n = 6
Output : Interior angle: 120
         Exterior angle: 60

Input : n = 10
Output: Interior angle: 144
        Exterior angle: 36

Interior angle: The angle between two adjacent sides inside the polygon is known as the Interior angle. 
Formula to find the Interior angle:
Interior Angle = 
Exterior angle: The angle formed by any side of a polygon and the extension of its adjacent side is known as Exterior angle.
Exterior angle = 

Program to find interior and exterior angles of a Regular Polygon: 

C++

// CPP program to find the interior and
// exterior angle of a given polygon
#include <iostream>
using namespace std;

// function to find the interior and
// exterior angle
void findAngle(int n)
{
    int interiorAngle, exteriorAngle;

    // formula to find the interior angle
    interiorAngle = (n - 2) * 180 / n;

    // formula to find the exterior angle
    exteriorAngle = 360 / n;

    // Displaying the output
    cout << "Interior angle: " << interiorAngle << endl;

    cout << "Exterior angle: " << exteriorAngle;
}

// Driver code
int main()
{
    int n = 10;

    // Function calling
    findAngle(n);
    return 0;
}

Java

// Java program to find the interior and
// exterior angle of a given polygon
import java.io.*;

class GFG {

    // function to find the interior and
    // exterior angle
    static void findAngle(int n)
    {
        int interiorAngle, exteriorAngle;

        // formula to find the interior angle
        interiorAngle = (n - 2) * 180 / n;

        // formula to find the exterior angle
        exteriorAngle = 360 / n;

        // Displaying the output
        System.out.println("Interior angle: " + interiorAngle);

        System.out.println("Exterior angle: " + exteriorAngle);
    }

    // Driver code
    public static void main (String[] args)
    {
        int n = 10;

        // Function calling
        findAngle(n);
    }
}

Python3

# Python3 program to find
# the interior and exterior
# angle of a given polygon

# function to find
# the interior and
# exterior angle
def findAngle(n):

    # formula to find the
    # interior angle
    interiorAngle = int((n - 2) * 180 / n)

    # formula to find
    # the exterior angle
    exteriorAngle = int(360 / n)

    # Displaying the output
    print("Interior angle: " ,
            interiorAngle )

    print("Exterior angle: " ,
           exteriorAngle )

# Driver code
n = 10

# Function calling
findAngle(n)

# This code is contributed
# by Smitha

C#

// C# program to find the
// interior and exterior
// angle of a given polygon
using System;

class GFG
{

    // function to find
    // the interior and
    // exterior angle
    static void findAngle(int n)
    {
        int interiorAngle,
            exteriorAngle;

        // formula to find
        // the interior angle
        interiorAngle = (n - 2) * 180 / n;

        // formula to find
        // the exterior angle
        exteriorAngle = 360 / n;

        // Displaying the output
        Console.Write("Interior angle: " +
                    interiorAngle + "\n");

        Console.Write("Exterior angle: " +
                           exteriorAngle);
    }

    // Driver code
    public static void Main ()
    {
        int n = 10;

        // Function calling
        findAngle(n);
    }
}

// This code is contributed
// by Smitha

PHP

<?php
// PHP program to find the
// interior and exterior
// angle of a given polygon

// function to find the
// interior and exterior
// angle
function findAngle($n)
{
    $interiorAngle;
    $exteriorAngle;

    // formula to find
    // the interior angle
    $interiorAngle = ($n - 2) *
                      180 / $n;

    // formula to find
    // the exterior angle
    $exteriorAngle = 360 /$n;

    // Displaying the output
    echo "Interior angle: " ,
          $interiorAngle, "\n" ;

    echo "Exterior angle: " ,
          $exteriorAngle;
}

// Driver code
$n = 10;

// Function calling
findAngle($n);

// This code is contributed
// by inder_verma.
?>

Javascript

<script>
// JavaScript program to find the interior and
// exterior angle of a given polygon

// function to find the interior and
// exterior angle
function findAngle(n)
{
    let interiorAngle, exteriorAngle;

    // formula to find the interior angle
    interiorAngle = Math.floor((n - 2) * 180 / n);

    // formula to find the exterior angle
    exteriorAngle = Math.floor(360 / n);

    // Displaying the output
    document.write("Interior angle: " + interiorAngle + "<br>");

    document.write("Exterior angle: " + exteriorAngle);
}

// Driver code
    let n = 10;

    // Function calling
    findAngle(n);

// This code is contributed by Surbhi Tyagi.
</script>

Output

Interior angle: 144
Exterior angle: 36

Time Complexity: O(1)
Auxiliary Space: O(1)