Answer:
See Below.
Explanation:
Remember that:
- If c² > a² + b², then we have an obtuse triangle.
- If c² < a² + b², then we have an acute triangle.
- And if c² = a² + b², then we have a right triangle.
Where c is the longest side, and a and b are the two remaining sides.
(16 is less than 9 + 9 or 18.)
(25 is equal to 9 + 16 = 25.)