Question

Angles which measurethan ${90}^o$ butthan ${180}^o$ are known as OBTUSE ANGLES.

Answer 1

Obtuse angles are greater than ${90}^o$ but less than ${180}^o$.
For example, ${120}^o$ is greater than ${90}^o$ but less than ${180}^o$.
Hence, ${120}^o$ is an obtuse angle.