After tracing the path of a ray of light through a glass prism a student marked the angle of incidence ($\angle i$), angle of refraction ($\angle r$) angle of emergence ($\angle e$) and the angle of deviation ($\angle D$) as shown in the diagram. The correctly marked angles are:

Hint

The angle of incidence is the angle between the incident ray and the normal to the surface of the prism. The angle of refraction is the angle between the refracted ray and the normal to the surface of the prism. The angle of emergence is the angle between the emergent ray and the normal to the surface of the prism. The angle of deviation is the angle between the incident ray and the emergent ray.

Quick oral answer

The correctly marked angles are $\angle i$, $\angle e$ and $\angle D$. The angle of incidence is the angle between the incident ray and the normal to the surface of the prism. The angle of refraction is the angle between the refracted ray and the normal to the surface of the prism. The angle of emergence is the angle between the emergent ray and the normal to the surface of the prism. The angle of deviation is the angle between the incident ray and the emergent ray.