A rectangular pyramid - except that a majority of Egyptian tombs were square based, not rectangle based.
pyramid
A triangular PYRAMID has a triangular base.
It is a 3-dimensional shape - a polyhedron = whose base is a rectangle and which has four triangular faces attached to its sides. These free vertices of these triangles meet at an apex above the base.
All except the base are always triangles; the shape of the base gives the name to the pyramid; eg a pentagonal pyramid has a pentagon as the base and five triangular faces; a triangular pyramid has three triangular faces and also has a triangle for the base.
A triangular base pyramid has 4 faces, 6 edges and 4 vertices
A triangular prism.
pyramid
It is a triangular prism
There are an infinite no of shapes that have exactly 4 triangular faces. The two commonest are a tetrahedron and an Egyptian pyramid. If the question is re-phrased to "What shape has exactly four faces, (all of which are triangular), then the only answer is a tetrahedron. An Egyptian pyramid has five faces - a square base and four triangular sides. It is regular (the apex is vertically above the center of the base) and the sides are isosceles.
A triangular PYRAMID has a triangular base.
It is a rectangular based pyramid
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.
It is a 3-dimensional shape - a polyhedron = whose base is a rectangle and which has four triangular faces attached to its sides. These free vertices of these triangles meet at an apex above the base.
A triangular prism.
A pyramid with a hexagonal base has a six sided base and 6 triangular faces.
A square pyramid has a base with 4 equal sides and triangular faces.
Triangular prism