1) ANGLE: The union of two non collinear rays which has common end point is called an angle.
2) RADIAN: Angle subtended at the centre of a circle by an arc of length equal to the radius of the circle is called angle of one radian.
3) A circle contains Radians
4) A circle contains Degrees
5) Radians Degrees
6) Degree Minutes
7) Minute Second
8) Radian
9) Radian
10)
Degrees 








Radians 








11) If is the angle (measured in radians) subtended at the centre of a circle of radius by an arc of length , then .