Question

what do we call the angle of the light that is reflecting off at a surface? (angle c)
angle of incidence
angle of diffusion
angle of reflection

Explanation:

When light reflects off a surface, the angle between the reflected ray and the normal (a perpendicular line to the surface at the point of incidence) is called the angle of reflection. In the context of reflection, the angle of incidence (angle \(A\)) is the angle between the incident ray and the normal, and the angle of reflection (angle \(C\)) is the angle for the reflected ray. There is no standard term "angle of diffusion" in basic reflection concepts related to this simple geometric - ray - based model.

Answer:

Angle of reflection