The Pythagorean Theorem ONLY works on which triangle? O Isosceles
O Obtuse
O Right
O Scalene

right angle ( right )

Step-by-step explanation:

Pythagoras' theorem only works for right-angled triangles, so you can use it to test whether a triangle has a right angle or not. In the triangle above, if a 2 < b 2 + c 2 the angle is acute.