What are Right Angles and Straight Angles ?
- There are four directions-North, South, East and West.
- When we move from North to East then it forms an angle of 90° which is called Right Angle.
- When we move from North to South then it forms an angle of 180° which is called Straight Angle.
- When we move four right angles in the same direction then we reach to the same position again i.e. if we make a clockwise turn from North to reach to North again then it forms an angle of 360° which is called a Complete Angle. This is called one revolution.