The angle of incidence (the angle at which the light ray hits the object) is equal to the angle of reflection (the angle at which the light ray bounces off the object). This is known as the law of reflection.

Here's a breakdown:

* Angle of Incidence: The angle between the incoming light ray and the normal (a line perpendicular to the surface of the object at the point of contact).

* Angle of Reflection: The angle between the reflected light ray and the normal.

In summary:

* The incoming and reflected light rays lie in the same plane.

* The angle of incidence is equal to the angle of reflection.

This law applies to all types of surfaces, whether they are smooth or rough, and is the foundation for how mirrors and other reflective surfaces work.