Question

Which of the following angles is not reflex?

• A. ${179}^{\circ }$
• B. ${181}^{\circ }$
• C. ${320}^{\circ }$
• D. ${359}^{\circ }$

Answer 1

The correct option is A ${179}^{\circ }$

An angle that measures greater than ${180}^{\circ }$ and less than ${360}^{\circ }$ is called a reflex angle.

Since ${179}^{\circ }$ is less than ${180}^{\circ },$ it is not reflex.

The remaining angles are reflex as they measure between ${180}^{\circ }$ and ${360}^{\circ }.$