(Compute the perimeter of a triangle) Write a program that...

Name: Problem 19, Chapter 4: Introduction to Programming Using Python
Uploaded: 2022-09-21T21:20:45-08:00
Duration: 1 min 27 s
Channel: Morgan Cheatham
Description: (Compute the perimeter of a triangle) Write a program that reads three edges for a triangle and computes the perimeter if the input is valid. Otherwise, display that the input is invalid. The input is valid if the sum of every pair of two edges is greater than the remaining edge. Here is a sample run:

(Compute the perimeter of a triangle) Write a program that reads three edges for a triangle and computes the perimeter if the input is valid. Otherwise, display that the input is invalid. The input is valid if the sum of every pair of two edges is greater than the remaining edge. Here is a sample run:

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Key Concepts

Conditional Logic

Conditional logic in programming refers to the use of if-else statements or similar control structures to execute different parts of the code based on whether certain conditions are met. Here, it helps decide whether to calculate the perimeter or display an error message if the input is invalid.

Input Validation

Input validation is the process of verifying that the data provided meets predefined criteria before processing. In this problem, it involves checking whether the provided edges satisfy the triangle inequality theorem to ensure that a valid triangle can be formed.

Perimeter Calculation

The perimeter of a triangle, or any polygon, is the total length around the shape, calculated by summing the lengths of all its sides. In the context of the problem, once the triangle's validity is established, adding the three edges gives its perimeter.

Triangle Inequality Theorem

This theorem is a fundamental concept in geometry that states that in a triangle, the sum of the lengths of any two sides must be greater than the length of the remaining side. It is essential for determining whether three given edges can form a valid triangle.

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