The supplement of an interior angle is called an exterior angle, that is, an interior angle and an exterior angle form a linear pair of angles.

The exterior angle here could be called a supplementary exterior angle.

The angle supplementary to the interior angle is called the exterior angle.

Some authors use the name exterior angle of a simple polygon to simply mean the explement exterior angle (not supplement!) of the interior angle.[13] This conflicts with the above usage.

Some authors use the name exterior angle of a simple polygon to simply mean the explement exterior angle (not supplement!) of the interior angle.[12] This conflicts with the above usage.

Some authors use the name exterior angle of a simple polygon to simply mean the explementary (not supplementary!) of the interior angle.[6] This conflicts with the above usage.

Some authors use the name exterior angle of a simple polygon to simply mean the explement exterior angle (not supplement!) of the interior angle.[4] This conflicts with the above usage.

Some authors use the name exterior angle of a simple polygon to simply mean the explement exterior angle (not supplement!) of the interior angle.[9] This conflicts with the above usage.

The notches preferably are provided rotated at an angle outwards-rearwards of the ski.

An exterior angle of a triangle is greater than each interior angle not supplementary to it.

The measure of an exterior angle of a triangle is greater than either non-adjacent interior angle.

An exterior angle of a triangle is greater than either remote interior angle.

So, the measure of the central angle of a regular dodecagon is 30 degrees.

Find the measure of each exterior angle of a regular decagon.

Understand the relationship between exterior angles and the interior angles