Python Program to Find Area of Triangle using Math Module

Learn about Python Program to Find Area of Triangle using Math Module in the below code example. Also refer the comments in the code snippet to get a detailed view about what’s actually happening.

Contents

Python Program to Find Area of Triangle using Math Module

# python program to find the area of the triangle

# math module
import math   

# input sides
a = float(input('Enter the first side of the triangle: '))
b = float(input('Enter the second side of the triangle: '))
c = float(input('Enter the third side of the triangle: '))

# checking triangle conditions  
if (a < 0 or b < 0 or c < 0 or 
                      (a+b <= c) or (a+c <=b) or (b+c <=a) ):  
    print('Not a valid triangle')
    
else:

    # calculating the semi-perimeter
    s = (a + b + c) / 2

    # area of triangle
    area = math.sqrt(s * (s - a) * (s - b) * (s - c))

    # print result
    print('Area of triangle = %0.2f' %area)

Output:

Enter the first side of the triangle: 3
Enter the second side of the triangle: 4
Enter the third side of the triangle: 5
Area of triangle = 6.00

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