Question

A triangle has side lengths of 28 in. 4 in, and 31 in. Classify it as acute, obtuse, or right

Answer 1

The answer is obtuse

Explanation:

a = 4

b = 28

c = 31

If a² + b² > c² - the angle is acute

a² + b² = 4² + 28² = 16 + 784 = 800

c² = 31² = 961

800 < 900

a² + b² < c²

Therefore, the angle is obtuse