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(6-2)*180 = 720 degrees.
360 degrees
The interior angles add up to 3240 degrees
All of the angles in an octagon add up to 810 degreesIf you want to know what one of the angles equals you do 810 divided by 6 to get 135Another contributor's answer:An octagon is an eight sided polygon.Interior angles total 1080 degrees.Exterior angles total 360 degrees.
The 7 interior angles of a heptagon add up to 900 degrees