The answer is a polyhedron
Chat with our AI personalities
An icosahedron is a regular polyhedron with 20 equilateral triangle faces.
The figure described is a polyhedron. It is a tetrahedron known as a triangular pyramid.
In geometry, a deltahedron (plural deltahedra) is a polyhedron whose faces are all equilateral triangles. The name is taken from the Greek upper case delta (Δ), which has the shape of an equilateral triangle.
Since you use the term "faces" of a shape, you may be referring to polyhedra,which are three dimensional solids. There is no maximum number of faces a polyhedron can have. But for regular polyhedra (a special case where all faces are congruent regular polygons), the regular polyhedron with the most faces is the icosahedron, which has 20 faces, each of them an equilateral triangle. The most familiar regular polyhedron is the cube which has six square faces.
In geometry, an icosahedron is a regular polyhedron with 20 identical equilateral triangular faces.