In geometry, a tetrahedron is a solid with four faces, which is a triangular pyramid (don't forget the base-face), and a regular tetrahedron has (4) faces that are equilateral triangles.
A pyramid has a polygonal base with all other sides being triangles. As the Egyptians famously demonstrated, a common pyramid has a square base with four triangles meeting at a vertex, but any polygon - regular or irregular - can be used as the base of such a polyhedron.
4 faces are triangles and 1 face is a square the square face is the base of the pyramid
No a hexagonal pyramid has a base of a octagon and six triangles. (:
A triangular prisim (3 faces on sides, one face on bottom).
how many faces does it have
because the the sides of a based form a face of a pyramid
The foam tetrahedron consists of four equilateral triangles connected along their sides, forming a pyramid-like shape with a triangular base and three triangular faces. Each face of the tetrahedron is an equilateral triangle, and the edges of the foam tetrahedron are all of equal length.
A pyramid is a generic term used to describe a polyhedron with a polygonal base and a number of triangles rising from that base to meet at an apex. A pyramid whose base is a polygon with n-sides (or vertices) has n+1 faces, n+1 vertices and 2n edges, where n >= 3. So a pryramid can have 4 or more faces.
24 faces including the base face
A prism has a variety of bases but the sides are always parallelograms. A triangular prism has a triangle as the two bases and parallelograms as lateral sides. A pyramid has a variety of bases but the sides are triangles.
A pyramid - it has a square base, and four triangles meeting to a point at the top.