An angle is a space in between two lines that meet.
It is measured in degrees by using a protractor.
Types of angles:
An acute angle is an angle that is less than 90°.
A right angle is an angle of 90°.
Obtuse angle is an angle which is more than 90° but less than 180°.
A straight angle is an angle whose angle makes a straight line 180°.
A reflex angle is an angle which is more than 180° but less than 360°
A revolution is an angle made by a complete turn.