Question

what is the measure of each interior angle of a regular 5-sided figure?
360
156
108
180

Explanation:

Step1: Sum of interior angles

Sum = $(n-2) \times 180^\circ$, where $n=5$
$\text{Sum} = (5-2) \times 180^\circ = 3 \times 180^\circ = 540^\circ$

Step2: Divide by number of sides

Each angle = $\frac{\text{Total Sum}}{n}$
$\text{Each angle} = \frac{540^\circ}{5} = 108^\circ$

Answer:

108 (Option: ○ 108)