A bipyramid is another term for a dipyramid, any of a group of solids formed by two pyramids placed symmetrically base-to-base.
octahedron is a regular square bipyramid but a square bipyramid can be non-regular
The two pentahedrons are called the triangular bipyramid and the square bipyramid. The triangular bipyramid consists of two tetrahedra sharing a common base, while the square bipyramid is formed by joining two square pyramids at their bases. Both shapes are part of the broader category of polyhedra known as bipyramids.
Here are some, with number of triangular faces in brackets:tetrahedron (4)triangular bipyramid (6)octahedron (8)pentagonal bipyramid (10)snub disphenoid (12)triaugmented triangular prism (14)gyroelongated square bipyramid (16).There is also a 24 faced stellation for an octahedron.Here are some, with number of triangular faces in brackets:tetrahedron (4)triangular bipyramid (6)octahedron (8)pentagonal bipyramid (10)snub disphenoid (12)triaugmented triangular prism (14)gyroelongated square bipyramid (16).There is also a 24 faced stellation for an octahedron.Here are some, with number of triangular faces in brackets:tetrahedron (4)triangular bipyramid (6)octahedron (8)pentagonal bipyramid (10)snub disphenoid (12)triaugmented triangular prism (14)gyroelongated square bipyramid (16).There is also a 24 faced stellation for an octahedron.Here are some, with number of triangular faces in brackets:tetrahedron (4)triangular bipyramid (6)octahedron (8)pentagonal bipyramid (10)snub disphenoid (12)triaugmented triangular prism (14)gyroelongated square bipyramid (16).There is also a 24 faced stellation for an octahedron.
trigonal bipyramid
It could be a bipyramid.
The official, mathematical word for 2 pyramids attached together is a bipyramid. It is called a bipyramid because -bi means 2, and bi-pyramid means 2 pyramids.
It is a hexahedron: more specifically, a triangular bipyramid.
A square dipyramid (bipyramid) has 6 vertices.
A triangular bipyramid.
A cube. Or a triangular bipyramid.
A trigonal bipyramid has a central atom surrounded by five atoms or groups of atoms, with three of them forming a triangular base and the other two located above and below the plane of the base. This shape resembles two pyramids joined at their bases.
A tetrahedron (4 faces) or triangular bipyramid (5 faces).