PHP Exercises: Check whether three given lengths of three sides form a right triangle

Last update on April 19 2025 11:50:36 (UTC/GMT +8 hours)

48. Right Triangle Check

Write a PHP program to check whether three given lengths (integers) of three sides form a right triangle. Print "Yes" if the given sides form a right triangle otherwise print "No".

Input:
Integers separated by a single space.
1 ≤ length of the side ≤ 1,000

Pictorial Presentation:

PHP: Check whether three given lengths of three sides form a right triangle.

Pictorial Presentation:

Sample Solution:

PHP Code:

<?php
// Assign values to variables representing the sides of a triangle
$a = 5;
$b = 3;
$c = 4;

// Square each side by multiplying it by itself
$a *= $a;
$b *= $b;
$c *= $c;

// Check if the sum of the squares of two sides equals the square of the third side
if ($a + $b == $c || $a + $c == $b || $b + $c == $a) {
    // Print "YES" if the condition is true
    echo "YES\n";
} else {
    // Print "NO" if the condition is false
    echo "NO\n";
}
?>

Explanation:

Variable Assignment:

Three variables, $a, $b, and $c, are assigned values representing the sides of a triangle: $a = 5, $b = 3, and $c = 4.

Squaring the Sides:

Each side is squared by multiplying it by itself:

$a *= $a; (Now $a is 25)
$b *= $b; (Now $b is 9)
$c *= $c; (Now $c is 16)

Checking the Pythagorean Theorem:

The code checks if the sum of the squares of any two sides equals the square of the third side using the condition:

if ($a + $b == $c || $a + $c == $b || $b + $c == $a)

This condition evaluates whether the triangle with the given sides is a right triangle.

Printing the Result:

If any of the conditions are true, it prints "YES\n", indicating that the triangle can be classified as a right triangle.
If none of the conditions are met, it prints "NO\n", indicating that the triangle is not a right triangle.

Output:

YES

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to check if three provided side lengths form a right triangle using the Pythagorean theorem.
Write a PHP function to verify triangle properties and test if a triangle is right-angled with floating point precision.
Write a PHP script to compare squared values of sides to determine right angle conditions with error tolerance.
Write a PHP script to validate triangle input and output a confirmation if it satisfies the right triangle condition.

PHP Code Editor:

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