How to find the sum of the interior angle measures in hexagon?

The angle sum of this polygon for interior angles can be determined by multiplying the number of triangles by 180°. The sum of the interior angle of a convex polygon with n sides is given by the following formula:
$S=(n-2)\times 180°$
A hexagon has six sides. Hence, by the angle sum formula,
Here,$n=6$
Thus, the sum of angles of hexagon = $(6-2)\times 180°$
$S=4\times 180°$
$S=720°$
Therefore, the measure of every internal angle of a regular hexagon is $720°$