The Pythagorean Theorem applies specifically to right triangles, which have one angle equal to 90 degrees. Therefore, the correct response would be:
Yes, because it is a right triangle.
If the triangle you are discussing has a right angle (90 degrees), then the Pythagorean Theorem is applicable. If it does not have a right angle, then the theorem does not apply. The responses indicating that the triangle is not a right triangle would be correct in that case.