For the sides to overlap, the angle must be so wide as to double back over itself. Thus, it must be 360 degrees or greater.
0 degrees
An inscribed angle is an angle whose vertex is on the circle and whose sides are chords.
central angle
an acute angle
A single ray.
The measure of an angle whose sides overlap is 0 degrees. It is than not an angle, but rather a line.
0 APEX!!
zero
0 degrees
An angle whose measure is exactly 180 degrees is a straight angle.
hextogonImproved Answer:-A regular pentagon which has 5 sides
An inscribed angle is an angle whose vertex is on the circle and whose sides are chords.
central angle
Inscribed angle
Right Angle
An angle whose measure is two times 90 degrees is a 180 degree angle, which is also a straight angle.
An angle whose degree measure is between 0 and 90 is an acute angle. An angle whose degree measure is between 90 and 180 is an obtuse angle. These are basic properties of geometry.