Question

If one angle at a point is reflex angle, the other at that point may be :

• A. Acute angle
• B. Obtuse angle
• C. Straight angle
• D. Acute or obtuse angle

Answer 1

The correct option is D Acute or obtuse angle

We know, the angle formed at a point is ${360}^o$.

When one of angle is reflex, it range from ${180}^o$ to ${360}^o$.

If angle is ${200}^o$ then the other angle is ${160}^o$, i.e obtuse angle.

If one reflex angle is ${300}^o$ then other angle is ${60}^o$ i.e acute angle.

Hence, the option $D$ is correct.