Python: How to calculate area of a triangle in Python?

Last update on February 21 2025 07:50:31 (UTC/GMT +8 hours)

Triangle Area Calculator

Write a Python program that will accept the base and height of a triangle and compute its area.

Python: Area of a triangle

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted triangle ABC.

Vertex of a triangle: The point at which two sides of a triangle meet.
Altitude of a triangle: The perpendicular segment from a vertex of a triangle to the line containing the opposite side.
Base of a triangle: The side of a triangle to which an altitude is drawn.
Height of a triangle: The length of an altitude.

Python: Area of a triangle

Sample Solution:

Python Code:

# Prompt the user to input the base and height of a triangle as integers.
b = int(input("Input the base : "))
h = int(input("Input the height : "))

# Calculate the area of the triangle using the formula: (base * height) / 2.
area = b * h / 2

# Print the calculated area of the triangle.
print("area = ", area)

Sample Output:

Input the base : 20                                                                                           
Input the height : 40                                                                                         
area =  400.0

Explanation:

The said code prompts the user to input an integer value for the base and height of a triangle. Stores these values in variables "b" and "h" respectively. It then calculates the area of the triangle by multiplying the base and height and dividing the result by 2 and assigns the result to the variable "area". Finally, it prints the calculated area.

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to compute the perimeter of a triangle given its three sides.
Write a script that calculates the area of a triangle using Heron's formula.
Write a Python function that determines if three given sides can form a valid triangle.
Write a program to calculate the height of a triangle given its area and base.

Python Code Editor:

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