Question

The lengths of the sides of a triangle are given below. Classify the triangle as acute, obtuse, or right.

13, 5, 12

A. Acute Triangle


B. Obtuse Triangle


C. Right Triangle

Answer 1

• C. Right Triangle

Explanation:

Verify with Pythagorean:

• 13² = 169
• 5² + 12² = 25 + 144 = 169
• 169 = 169

We see the squares are equal, so this is a right triangle.

Correct choice is C