(8-2)*180=1080
There is no regular polygon with an interior angle of 20o. If the interior angle is 120o then there are six sides and the sum of the angles is 720o.
Interior Angle: 150 degrees (Interior Angle Sum: 1800) Exterior Angle: 30 degrees (Exterior Angle Sum: 360)
There is a figure called a heptagon or an octagon but no such figure as a hectogon. It is, therefore, impossible to answer the question.
For a regular polygon with sides n, the sum of the interior angles = (n-2)180Therefore, a regular polygon has interior angle sum equal to 540o.(5-2)180=(3)180=540
(#sides-2)*180
180
180
180
180
Interior is 120 degrees Exterior is 60 degrees.
It is: (number of sides -2)*180 = sum of interior angles If its a regular polygon then: sum of interior angles/number of sides = each interior angle
For a regular octagon it is 1080