Sum of Polygon Angles

The sum of the angles in any polygon is equal to the number of sides in the polygon minus two, all multiplied by 180 degrees. Sum of polygon angles problems may ask you to determine the sum of angles in a particular type of polygon, the number of sides when given thhe sum of polygon angles, or a particular angle given the other angles in the polygon.

Videos

$How to derive the formula to find the sum of angles in any polygon.$
$How to find the sum of the angles when you know the number of sides of a polygon.$
$How to find the number of sides of a polygon when you know the sum of its angles.$
$How to apply the polygon angle sum theorem when you need to solve for x.$