what are the anglea of incidence and reflection? how are they related?

Dear student, 
​Please find below the solution to the asked query        

The angle made by the incident ray with the normal is called angle of incidence.

The angle made by a reflected ray with perpendicular to reflecting surface is called angle of reflection.

Here, i is the angle of incidence and r is the angle of reflection.

Relationship between angle of incidence and angle of reflection:
Angle of incidence= angle of reflection

Hope this information will clear your doubts about the topic.    Regards