pyramidshaped

Pyramid-shaped is an adjective used to describe objects and forms that resemble a pyramid. In geometry, a pyramid is a solid with a polygonal base and triangular faces that meet at a common apex. The base can be any polygon; common examples include triangular pyramids (tetrahedra) and square pyramids.

Geometric properties: If the base has n sides, the pyramid has n triangular lateral faces plus one base face, for a total of n+1 faces. It has n+1 vertices (the base vertices and the apex) and 2n edges. The height is the perpendicular distance from the apex to the base plane.

Variants and terminology: a pyramid with a square base is a square pyramid; if the base is triangular, the shape is often called a tetrahedron, though many sources classify all such solids as pyramids with triangular bases. The term pyramid-shaped is widely used in design and architecture to describe items that bear a roughly pyramidal silhouette.

Applications and examples: The Great Pyramid of Giza is the most famous square-based pyramid. In architecture and product design, pyramid-shaped forms appear in roofs, monuments, décor, packaging, and jewelry, where the silhouette or facets are emphasized for stylistic or symbolic reasons.

See also: Pyramid (geometry), Pyramidal, Tetrahedron, Ziggurat, Pyramid roof.