It is called an exterior angle.
The size of the angle would depend on the shape and number of sides the polygon has. It is called the exterior angle.
An exterior angle of the polygon.
The interior angle of a polygon is the angle formed by two adjacent sides of a polygon where the angle lies inside the area formed by the polygon. The exterior angle is that formed by one of these sides and the line formed by extending the other side. Consequently, External angle = 180 deg - Internal angle. Because they form supplementary angles, it does not matter which of the two sides you extend.
An exterior angle of a polygon is the supplement of the corresponding interior angle. The exterior angle is the angle between an extended sides of the polygon and the next side of the polygon.
Exterior Angle.............^_^
An interior or exterior angle of the polygon.
exterior angle
If measured on the inside of the polygon, the it is an interior angle.
Assuming that you mean the inside angle is 108 the answer is a pentagon. Each angle inside the polygon forms an acute angle on the outside with the next side. The measurement of the exterior acute angle is: 180 - 108 = 72 . Since all the acute angle around the outside must add up to 360 we find: 360 / 72 = 5 There are five acute angles and therefore five sides to the polygon.
A polygon is a closed figure in the plane. It has an inside and an outside.The angles on the inside are the interior angles. An exterior angle is the angle between any side of the polygon and a line extended from the next side.Here is an example to help.If you draw an triangle, the angles inside it are interior angles. Then if you extend any side, the angle between that line and the next side is the exterior angle.The sum of the exteriors is always 360. For a polygon with n sides, the sum of the interior angles is 180 (n-2) degrees.
If the polygon is regular, the measure of one interior angle of a 24 side polygon is 165 degrees.
You can find several of them in any polygon.