Since the problem did not provided any information regarding the prism that you need to label, you may find useful the following rules that helps you to label any prism.
The first rule is to identify if the base of the prism is a regular or irregular polygon. According to identification of base polygon, the prisms can be classified as regular or irregular prisms.
The shapes of the regular polygon base decide if the prism is triangular (triangle base), quadrangular (quadrilateral base), pentagonal (pentagon base), hexagonal (hexagon base).
The prism can be classified also as right prisms or obliques prisms, if the lateral faces are or are not perpendicular to the base of prism.