In this blog, we create a program to check whether a triangle is right-angled or not.

What is a “Right angle triangle”?

Being a right angle means a*a==b*b+c*c Or b*b==c*c+a*a Or c*c==a*a+b*b either condition is true then it is A right triangle.

Algorithm to  create the respective code

For a right triangle to be valid, it must meet the following criteria:

• a, b and c should be greater than 0.
• The sum of any two sides of a triangle must be greater than the third side.
• Pythagorean theorem, i.e. a^2 + b^2 = c^2.

C++ code to check whether a triangle is right angled or not

#include<iostream>
using namespace std;
int main()
{
 int a,b,c;

 cout<<"Enter The Value Of a,b,c \n";//side's of triangle
 cin>>a>>b>>c;

 if(a*a==b*b+c*c ||b*b==c*c+a*a || c*c==a*a+b*b)
 {
  cout<<"The Triangle is Right angled\n";
 }
 else
 {
  cout<<"The Triangle Scalene angled\n";
 }
 return 0;

}

Output of the above code

Explanation of the code

Since the values of side i.e. a,b, and c follows and satisfies the relation a^2 + b^2 = c^2 therefore, the result of the output shows that the triangle is a right-angled triangle.