1. There are acute angles: an acute angle is a angle that is smaller than a right angle.
  2. There are obtuse angles: an obtuse angle is an angle is an angle that is bigger than a right angle.
  3. There are right angles :a right angle is an angle that is in between a acute angle and a obtuse angle which is called 90% degrees angle .
  4. Any point in an angle is called a vertex.
  5. Angle is latin for corner.

Right Angle                 Obtuse Angle         Acute angle 

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