Question

question 3 of 22 what is the sum of the measures of the interior angles of a 13 - sided polygon? a. 1300° b. 2700° c. 1980° d. 2340°

Explanation:

Step1: Recall the formula

The formula for the sum of interior - angles of a polygon is $S=(n - 2)\times180^{\circ}$, where $n$ is the number of sides of the polygon.

Step2: Substitute the value of $n$

Here, $n = 13$. So, $S=(13 - 2)\times180^{\circ}$.

Step3: Calculate the result

First, $13−2 = 11$. Then, $11\times180^{\circ}=1980^{\circ}$.

Answer:

C. $1980^{\circ}$