A triangular prism is a three-dimensional geometric shape with two parallel triangular bases and three rectangular faces connecting the corresponding sides of the triangles. The shape is classified as a polyhedron, specifically a type of prism, where the cross-section along its length remains constant. The volume of a triangular prism can be calculated using the formula V = \frac12 \times b \times h \times l , where b is the base length of the triangle, h is the height of the triangle, and l is the length of the prism. Triangular prisms are commonly found in architecture and design, as well as in nature, such as in the shape of some crystals.