Determine the sum of all interior angles of a polygon ex 3

The video tutorial explains how to find the sum of the interior angles of a hexagon. It begins by illustrating a hexagon and explains that while a regular hexagon is used for individual angle calculations, any hexagon can be used for finding the sum. The method involves drawing lines from one vertex to others, forming triangles. Since each triangle's interior angles sum to 180 degrees, the hexagon's angles can be calculated by multiplying the number of triangles by 180. The formula (number of sides minus 2) times 180 is also introduced, confirming the sum of 720 degrees for a hexagon.

How do you calculate the sum of the interior angles of a hexagon using the number of sides?

What is the final sum of the interior angles of a hexagon?