Here's a breakdown:

* Incident Ray: The ray of light that strikes the object.

* Reflected Ray: The ray of light that bounces off the object.

* Normal: An imaginary line perpendicular to the surface of the object at the point where the incident ray strikes.

The angle of incidence (the angle between the incident ray and the normal) is equal to the angle of reflection (the angle between the reflected ray and the normal). This is known as the law of reflection.