Question

Give the name of the angle which is made up of less than $\frac{1}{4}$ of a revolution.

Answer 1

Revolution is ${360}^o$ and $\frac{1}{4}$ of ${360}^o$ is ${90}^o$ therefore any angle less than ${90}^o$ is acute angle.

Hence, the name of the angle which is made up of less than $\frac{1}{4}$ of a revolution is acute angle.