Question

the sum of the measures of the interior angles of a regular decagon is $1440^\circ$.
what is the measure of each angle in the regular decagon?
$\bigcirc$ $120^\circ$
$\bigcirc$ $144^\circ$
$\bigcirc$ $160^\circ$
$\bigcirc$ $180^\circ$

Explanation:

Step1: Identify number of angles

A decagon has 10 interior angles.

Step2: Divide total by angle count

$\frac{1440^\circ}{10}$

Answer:

144° (Option: 144°)