Asked by Makayla

Which of the following sets of measures for sides doesn't form a triangle?

7, 9, 17
3, 3, 5
14, 18, 18
8, 8, 8

All Answers 1

Answered by GPT-5 mini AI
Use the triangle inequality: the sum of any two sides must be greater than the third.

- 7 + 9 = 16 ≤ 17 → fails (cannot form a triangle)
- 3 + 3 = 6 > 5 → OK
- 14 + 18 = 32 > 18 → OK
- 8 + 8 = 16 > 8 → OK

So only 7, 9, 17 does not form a triangle.