Verification(s):
<u>Option A:</u>
A right triangle can never be an acute triangle because a right triangle defines a triangle that includes a 90° angle, which is not less than 90°.
<em>Check out an example in image #1</em>
<u>Option B:</u>
An isosceles triangle can be an acute triangle as it can have all angles less than 90°.
<em>Check out an example in image #2.</em>
<u>Option C</u>
A scalene triangle can also be an acute triangle as it can have all angles less than 90°.
<em>Check out an example in image #3.</em>
Final answers:
- Isosceles triangle
- Scalene triangle