What is a 'triangular pyramid'?

A triangular pyramid is a pyramid having a triangular base. The tetrahedron is a triangular pyramid having congruent equilateral triangles for each of its faces. read more

In geometry, a pyramid is a polyhedron formed by connecting a polygonal base and a point, called the apex. Each base edge and apex form a triangle, called a lateral face. It is a conic solid with polygonal base. A pyramid with an n-sided base has n + 1 vertices, n + 1 faces, and 2n edges. All pyramids are self-dual. read more

A pyramid with a triangle as a base is a triangular pyramid. Since the base is a triangle and a triangle has three sides, a triangular pyramid has three triangular faces. Triangular pyramids show up in architecture, art, design, and other areas. read more