The sum of the internal angles is what I think you are asking, since the externals are always 360 degrees. We use the formula 180(n-2) for the sum of the total of the angles So 180x6=1080
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Each exterior angle of a regular octagon is 360/8 = 45 degrees
135 per angle, 1080 total -hannah m
An octagon-based prism.An octagon-based prism.An octagon-based prism.An octagon-based prism.
(sides-2)*180=the total angle of the shape. So octagon (8-2)*180=1080 Just like a triangle (3-2)*180
What is the 3d name for octagon