A big prism is a geometric solid with two parallel, congruent polygonal bases connected by rectangular lateral faces. The height of the prism is the perpendicular distance between the bases. The size and shape of the bases determine the type of prism, such as triangular, rectangular, or hexagonal. For instance, a big rectangular prism, or cuboid, has rectangular bases and edges that meet at right angles, while a big triangular prism has triangular bases. The volume of a big prism is calculated by multiplying the area of the base by the height, and the surface area is the sum of the areas of all its faces. Its primary applications are in architecture and engineering, where large, prism-shaped structures are often utilized for their strength and stability.