It depends how long each side is. An octagon's sides do not have to all be the same length, they can vary from octagon to octagon. A regular octagon's sides are all equal so the sum of their measures would be 8 times the length of any one side..
The sum of the measures of the exterior angles of an octagon (and any polygon) is 360o.
For a regular octagon it is 1080
1,080
1080 degrees.
360 degrees
octagon
The 8 interior angles of an octagon add up to 1080 degrees.
octagon
80 degrees. The sum of the angles in an octagon is 1080. If 7 sides sum to 1000 degrees you subtract that from 1080.
1080 degrees 135*8 = 1080 DEGREES
The 8 interior angles of an octagon add up to 1080 degrees.
The 8 interior angles of an octagon add up to 1080 degrees