If it is rectangular pyramid then it must be pyramidal in shape: otherwise it would not be called that!
I don't really understand your question, but one example of a rectangular based pyramid is the Great Pyramid in Giza.
One of the examples of a real-life pyramid is the Great Pyramid of Giza.
The Great Pyramids in Egypt
A rectangle pyramid is a 4 sided pyramid (4 sided in the triangles) with a base of a rectangle. An Egyptian pyramid is a great example of a rectangular pyramid.
A rectangular pyramid.
Rectangular pyramid.
Rectangular prism = 6Triangular prism = 5 Triangular pyramid = 4 Rectangular prism: it is still 6 Rectangular pyramid = 5.
A rectangular pyramid.
Triangular prism - 6 Rectangular prism - 8 Rectangular pyramid - 5 Square pyramid - 5 Answer: Rectangular prism
A triangular pyramid has 4 triangular sides. A rectangular pyramid has 2 triangular sides and 3 rectangular sides.
A triangular pyramid has 4 triangular sides.A rectangular pyramid has 4 triangular sides and 1 rectangular side.
Rectangular pyramid: 5 Rectangular prism: 8 So (minus 3) more vertices in a rectangular pyramid.