A rectangular pyramid has 5 faces: a rectangular base, and 4 triangular faces.
A triangular prism.
Yes, a rectangular pyramid is made of four triangular faces and a rectangular base.
Triangular prism
The shape you are describing is a triangular pyramid. A triangular pyramid has a base that is a triangle and three triangular faces that meet at a single point called the apex. The base of the pyramid is a rectangle, which is a quadrilateral with four right angles. The triangular faces of the pyramid connect the vertices of the base to the apex.
rectangular pyramid
a rectangular pyramid rectangular base and 4 triangular sides = 5 faces
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It is a pentahedron with a rectangular base and four triangular lateral faces.
The flat surfaces on a pyramid are called faces. A pyramid has one base and triangular faces that meet at a single point called the apex. On a cube or rectangular prism, the flat surfaces are called faces as well. But unlike a pyramid, a cube has six square faces, while a rectangular prism has two rectangular bases and four rectangular faces.
A rectangular pyramid has a rectangular base and four triangular faces that meet at a single point called the apex. A square pyramid, on the other hand, has a square base and four triangular faces that meet at a single point. The key difference is in the shape of the base - rectangular pyramid has a rectangular base, while a square pyramid has a square base.
A 3D shape with one base and three faces can only have triangular faces.