A triangular prism is a prism with a triangular base and faces coresponding to each side of a base. The faces which are not bases are called lateral faces.
Usually right triangular prisms (with rectangular lateral faces) are studied.
In general, the volume of a triangular prism is the area of the base times the height of the prism.
In general, the surface area of a triangular prism is the sum of the areas of all of the faces of the prism.
Right Prism with a Triangular Base
b: A base of the triangular base of the prism
s1: One of the two remaining sides (not the designated base) of the triangular base of the prism
s2: The second of two remaining sides (not the designated base) of the triangular base of the prism
H: The height of the triangular base of the prism
h: The height of the prism
V: The volume of the interior of the prism
S: The surface area of the prism