The diagram shows the back fences of three houses in a small neighborhood. The lengths of the fences are given.

Pythagorean theorem: a2 + b2 = c2

A triangle has side lengths 12 meters, 5 meters, 13 meters.

Use the Pythagorean theorem to classify the triangle formed by the three fences. Which is true about the numbers 5, 12, and 13?
They are a Pythagorean triple that does not form a right triangle.
They are a Pythagorean triple that forms a right triangle.
They do not satisfy the Pythagorean theorem, but they do form a right triangle.
They do not satisfy the Pythagorean theorem, and they do not form a right triangle.