Is 48,55,73 a Pythagorean triple

Yes, is a Pythagorean triple

Step-by-step explanation:

To know if you can build a right triangle with those sides we have to make the following equality

h² = l1² + l2²

The hypotenuse is always the longest side so it should be 73

we check the equality of the equation

73² = 48² + 55²

5329 = 2304 + 3024

5329 = 5329

Equality was fulfilled so it is a right triangle