A solid object with two identical ends and flat sides:

• The sides are parallelograms (4-sided shape with opposites sides parallel)

• The cross section is the same all along its length

The shape of the ends give the prism a name, such as "triangular prism"

It is also a polyhedron.

• The sides are parallelograms (4-sided shape with opposites sides parallel)

• The cross section is the same all along its length

The shape of the ends give the prism a name, such as "triangular prism"

It is also a polyhedron.

See: Polyhedron