Question

If $\angle ABC=$ ${120}^{\circ }$, $\angle ABC$ is also known as a/an ___ angle.

• A. Acute angle
• B. Obtuse angle
• C. Reflex Angle
• D. Right angle

Answer 1

The correct option is B Obtuse angle

Angle greater than ${90}^{\circ }$ is known as an obtuse angle.
Angle smaller than ${90}^{\circ }$ is known as an acute angle.
Angle equal to ${90}^{\circ }$ is known as a right angle.
Since $\angle$ABC = ${120}^{\circ }$ , it is an obtuse angle.