It's a Reflex Angle.
An angle of between 90 degrees and 180 degrees is called an obtuse angle, an angle that is exactly 180 degrees is called a straight angle (because it creates a straight line), and an angle of more then 180 degrees is called a reflex angle.
180 degrees is a straight line
Supplementary angles add up to 180 degrees
Reflex
How can a circle measure 180 degrees? Circles don't have any angles!
An angle of between 90 degrees and 180 degrees is called an obtuse angle, an angle that is exactly 180 degrees is called a straight angle (because it creates a straight line), and an angle of more then 180 degrees is called a reflex angle.
180 degrees is a straight line
An angle that measures 180 degrees is called a straight angle.
Supplementary angles add up to 180 degrees
An angle that is more than 180 degrees and less than 360 degrees is called a "reflex" angle.NoteAngles less than 90 degrees are called "acute" angles. An angle that is exactly 90 degrees is called a "right" angle.Angles that are more than 90 degrees but less than 180 degrees are call "obtuse" angles.An angle that is exactly 180 degrees is called a "straight line".Angles that are more than 180 degrees and less than 360 degrees are called "reflex" angles.
An angle that measures more than 90 degrees but less than 180 degrees is called an "obtuse" angle. Note Angles less than 90 degrees are called "acute" angles. An angle that is exactly 90 degrees is called a "right" angle. Angles that are more than 90 degrees but less than 180 degrees are call "obtuse" angles. An angle that is exactly 180 degrees is called a "straight line". Angles that are more than 180 degrees and less than 360 degrees are called "reflex" angles.
Reflex
How can a circle measure 180 degrees? Circles don't have any angles!
Places east of Greenwich for 180 degrees are called the International Date Line.
An angle that is between 90 degrees and 180 degrees is called an obtuse angle. Ex. : 175 degrees, 140 degrees.
An angle greater than 180 degrees but less than 360 degrees is a reflex angle.
An angle of 180° is a straight line.