Verification(s):
Option A:
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°.
Check out an example in image #1
Option B:
An isosceles triangle can be an acute triangle as it can have all angles less than 90°.
Check out an example in image #2.
Option C
A scalene triangle can also be an acute triangle as it can have all angles less than 90°.
Check out an example in image #3.
Final answers:
- Isosceles triangle
- Scalene triangle
