9514 1404 393
Answer:
obtuse
Step-by-step explanation:
If the triangle were a right triangle, the longest side would be found using the Pythagorean theorem:
a² + b² = c²
4.5² + 6² = c² = 20.25 +36 = 56.25
c = √56.25 = 7.5
At 8.5 cm, the longest side is longer than that necessary to make a right triangle, so the largest angle is greater than 90°.
Stephanie's triangle is an obtuse triangle.
