Final answer:
The given triangle is a right triangle.
Step-by-step explanation:
A right triangle is a triangle in which one of the angles is a right angle, or 90 degrees. To determine if the given triangle is a right triangle, we can use the Pythagorean theorem. According to the theorem, in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
In this case, if 48 mm and 55 mm are the lengths of the two shorter sides, and 73 mm is the length of the hypotenuse, we can check if the Pythagorean theorem holds:
48^2 + 55^2 = 73^2
2304 + 3025 = 5329
Based on the calculation, we can see that the equation holds true, which means the given triangle is a right triangle.