Question

Which set of numbers can represent the side lengths, in millimeters, of an obtuse triangle?

8, 10, 14
9, 12, 15
10, 14, 17
12, 15, 19

Answer 1

a

Explanation:

Answer 2

8, 10, 14

Explanation:

1. 8² + 10² = 164 and 14² = 196, so this works.

2. 9² + 12² = 15² = 225, so this is a right triangle.

3. 10² + 14² = 296 and 17² = 289, so this is an acute triangle.

4. 12² + 15² = 369 and 19² = 361, so this is an acute triangle.