A ray of light reflected from a surface forms an angle with an imaginary line drawn at right angles to the surface The imaginary line is known as the normal and the angle between it and the reflected ray is known as the angle of reflection The angle of reflection is always equal to the angle of incidence
When light strikes a boundary between two materials, this is the angle between the direction of travel of reflected light and the normal
The angle formed by a reflected ray and a perpendicular to the surface at the point of reflection
The angle between the reflected ray and the normal drawn to the point of incidence
the angle between a reflected ray and a line perpendicular to the reflecting surface at the point of incidence
The angle that a reflected ray makes with the interior normal of the surface of relection In three dimension, the angle of incidence, the angle of reflection and the normal are co-planar