4. It is called a tetrahedron.
1. triangular prism it has 2 triangular faces. 2.triangular base pyramid, it has 5 triangular faces. 3. square base pyramid, it has 4 triangular faces.
that depends, if it has a square base, it has four faces. but if it has a triangular base, it has three faces.
a pyramid with a triangular base has 4 faces. a pyramid with a square base has 5 faces.
A triangular base pyramid has 4 faces, 6 edges and 4 vertices
A pyramid will have as many triangular faces as the number of sides its base has, plus one in the shape of its base. This means an octagon based pyramid has nine faces (eight triangular ones plus the octagon base).
Square Pyramid has a square base and 4 triangular sides. Triangular Pyramid has a triangle base and 3 triangular sides.
Including the base it has 4 faces
a pyramid has for faces and a base so all in all 5 faces the four on the outside are triangular and the base is square :)
There are four triangular faces, of which any one can be a base at any instant.
4 the base and 3 sides
Four(4). It is formally named as a 'tetrahedron'. There is the triangular base ; one side. and three triangular faces m aking for a total of four faces. A square based 'pyramid' is formally a 'pyramid'. A square base and four triangular faces.
If you mean a triangular pyramid then it has four faces, one base and three sides.