60 sides
180-174 = 6
360/6 = 60
Providing that it is a regular 28 sided polgon then each interior angle will measure: 1670 8' 34.29''
180
It wil be a regular 18 sided polgon
In a regular polygon, the measure of the exterior angle is related to the interior angle by the equation: exterior angle = 180° - interior angle. If the exterior angle is twice the measure of the interior angle, we can set up the equation: exterior angle = 2 × interior angle. Solving this gives us the equation: 180° - interior angle = 2 × interior angle, leading to 180° = 3 × interior angle, or interior angle = 60°. This corresponds to a regular hexagon, as it has interior angles of 120° and exterior angles of 60°.
720 degrees
Each interior angle will measure 162 degrees
360/18 ie 20 sides
The measure of each interior angle of a fifteen sided regular polygon, a pendedecagon, is 156o.
It is: 180-exterior angle = interior angle because there are 180 degrees on a straight line
144
120°
135 Each interior angle of a regular octagon measures 135 degrees.