# Ex.3.2 Q3 Understanding Quadrilaterals Solution - NCERT Maths Class 8

Go back to 'Ex.3.2'

## Question

How many sides does a regular polygon have if the measure of an exterior angle is \(24^\circ\)?

## Text Solution

**What is Known?**

Measure of an exterior angle is \(24^\circ\).

**What is Unknown?**

The number of sides of the regular polygon.

**Steps:**

Total measure of all the exterior angles of the regular polygon \(= 360^\circ \)

Let number of sides be \(= n\).

Measure of each exterior angle \( = 24^\circ \)

Therefore, the number of sides

\[\begin{align} &= \,\,\frac{{{\text{Sum of exterior angles}}}}{{{\text{Each exterior angle}}}}\\&= \,\,\,\frac{{360^\circ }}{{24^\circ }}\\&= \,\,\,15\end{align}\]

\(\therefore \) \(R\), regular polygon has \(15\) sides.