i didnt really understand this question...but i believe what your trying to ask, which shape has 4 trianglular faces? and my answer is the pyramid i hope that is the answer your looking for.
However, a pyramid as in Egypt, has a square base. The proper name for the shape with four triangular sides is a tetrahedron.
The solid shape that has one square face and four triangular faces is called a pyramid. If you were to have a shape that had four triangular faces and no square face, it would be called a triangular pyramid.
triangular face shape
A square based pyramid.
A triangular prisim (3 faces on sides, one face on bottom).
An octagon is a plane shape with just one face - an octagonal face! It cannot have triangular faces.
The solid shape that has one square face and four triangular faces is called a pyramid. If you were to have a shape that had four triangular faces and no square face, it would be called a triangular pyramid.
The tetrahedron has 4 equilateral triangles as its faces.
There is no 3-d shape with 4 and 1 = 5 triangular faces.
Tetrahedron or triangular pyramid.
triangular face shape
A square based pyramid.
Square pyramid.
The geometric shape that has 1 square face and 4 triangular faces is a pyramid. A pyramid also has five vertices and eight edges. The square acts as the base for the shape on which it sits.
Well, any shape with a triangular face. I assume that you mean a shape that only has (identical) triangles for faces. There are 2: the tetrahedron with 4 triangles, and the icosahedron with 20 triangles. * * * * * What about a triangular dipyramid? Two triangular pyramids stuck together along one face?
Triangular prisim
A cuboid prism has no triangular faces
Triangular Prism, Triangular Pyramid.