360 degrees. (All polygons have an exterior angle sum of 360 degrees.)
Regular Polygons
The exterior angle of an octagon measures 45 degrees. In geometry, this belongs to the group of polygons which are composed of many sides and angles.
Like all polygons the exterior angles add up to 360 degrees
Exterior angle+interior angle=180 degrees and 180-exterior angle=interior angle
It is: 180-exterior angle = interior angle
An equilateral triangle is the only polygon in which the exterior angle is larger than the interior angle. They are equal in a square and smaller in all regular polygons with more sides,
An interior angle and the corresponding exterior angle add up to a straight angle. that is, they are supplementary.
The sum of the exterior angles of all polygons is 360 degrees.
It is the equilateral triangle that has the largest exterior angle of 120 degrees
The interior angle and the exterior angle are supplementary. That's why you learned about supplementary angles ... or at least they were presented in class ... before polygons.
A polygon with any number of sides can have an exterior angle that is larger than the corresponding interior angle. However, a triangle is the only regular polygon where the exterior angle is larger.
It is the regular equilateral triangle whose each exterior angle is 120 degrees
Square = 90 degrees Pentagon = 72 degrees
360 degrees. (All polygons have an exterior angle sum of 360 degrees.)
Regular Polygons
The exterior angle of an octagon measures 45 degrees. In geometry, this belongs to the group of polygons which are composed of many sides and angles.