6 sides
A tetrahedron has four plane faces. The tetrahedron is the only convex polyhedron that has four faces.
a tetrahedron is a shape with 4 triangular faces, 6 sides and 4 vertices [corners]
A tetrahedron has 4 vertices and 4 sides. Each side is an equilateral triangle. * * * * * Each face is an equilateral triangle only if it is a regular tetrahedron; there is no reason to assume it is.
A tetrahedron has 4 faces. A "regular tetrahedron" has an equilateral triangular base with three equilateral triangles as sides coming up from it.
A tetrahedron has 4 faces. It also has 4 vertices and 6 edges.
Four sides ⇒ it is a tetrahedron. More commonly, it is called a triangular pyramid.
Since the number of sides and vertices is different, it cannot be a 2-dimensional shape. The only 3-dimensional shape with 4 vertices is a tetrahedron and that does not have 6 sides. Consequently, there is no such shape.
A triangular based pyramid which is a tetrahedron has 6 edges or sides
A tetrahedron has 4 vertices. By the way it has 4 faces and 6 edges.
Any triangle-based pyramid will do. If the sides are all the same length it's then called a tetrahedron.
A [http://en.wikipedia.org/wiki/Tetrahedron tetrahedron].
A tetrahedron triangular based pyramid has 6 edges, 4 faces and 4 vertices
A tetrahedron is a triangular based pyramid that has 6 edges, 4 faces and 4 vertices.