The interior angle of any polygon (other than a triangle) can have ANY value greater than 0 degrees and less than 360 degrees. 180 degrees may be excluded since that does not really make an angle. There is no other requirement of an individual angle. Consequently, you cannot find an interior angle of a 9-gon.
Each interior angle measures 135 degrees Each exterior angle measures 45 degrees
Convex(all interior angles are less than, or equal to, 180 degrees) and concave(one interior angle is more than 180 degrees).
The angles between adjacent sides of a polygon that are interior to the polygon. If the polygon is convex, the interior angles are always less than 180 degrees. If it is concave, at least one interior angle will be greater than 180 degrees.
A regular polygon cannot have an interior angle of less than 60 degrees. If it is not regular, then you haven't a hope of answering this question.
An angle greater than 0 but less than 90 degrees is an acute angle
An obtuse angle is greater than 90 but less than 180 degrees as for example each interior angle of a regular 5 sided pentagon measures 108 degrees.
An angle that is less than 90 degrees is an acute angle.
A angle less than 90 degrees is a acute angle.
A regular polygon cannot have an interior angle that is less than 60 degrees.
An angle less than 90 degrees is called an acute angle.
An Acute Angle is the kind of angle that is less than 90 degrees.