A triangle can have:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Only one right or one obtuse angle.
A triangle can have only one angle that is right (90°) or obtuse (>90°).
If one angle is 90°, the other two must be acute and sum to 90°. If one angle is >90°, the other two must be acute and sum to less than 90°.