30o
All of the angles are equal in a "regular" polygon. (All of the sides are too.)
A regular polygon.
Only if the polygon is "regular".
Only when it is a regular polygon that all interior angles are of equal measure
A regular 10 polygon
it will decrease
a "regular" polygon
Only if the polygon is a regular quadrilateral.
All of the angles are equal in a "regular" polygon. (All of the sides are too.)
That would be a regular polygon.
A regular polygon.
Only if the polygon is "regular".
Only when it is a regular polygon that all interior angles are of equal measure
All of the central angles in any polygon add up to 360 degrees.If the octogon is regular ... all of its central angles are equal ...then each of them is 45 degrees.
A 13 sided regular polygon
A regular 10 polygon
Only when the polygon is a regular convex polygon. Such as an equilateral triangle, or a square, or a regular pentagon.