2o degreees the formula is 360 divided by n n meaning number of side so in this case 360 dividedby 18 which equals 20 360/n 360/18 20
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Each exterior angle will measure 9 degrees
Providing that it is a regular hexagon then each exterior angle will measure 60 degrees
400 exterior angle = 360/9 = 400
An interior angle of a regular octagon is 45 degrees. The exterior angles measure 315 degrees.
Regular Polygons