All six of them.
All six of them.
The shape you are describing is a prism, specifically a rectangular prism or a parallelepiped. In a prism, the two opposite faces are congruent and identical, while the other faces are parallelograms. For example, in a rectangular prism, the two identical faces are rectangles, and the lateral faces are also rectangles (which are a specific type of parallelogram).
A rectangular prism.
A rectangular prism, it has 6 rectangular faces.
A rectangular prism?
a rectangular prism
it has 6
A triangular prism has two triangular faces, a rectangular prism does not have any.
A rectangular prism is a 3-dimensional shape comprising six rectangular faces.
A rectangular prism
A rectangular prism does not need to have any square faces. All its faces may be rectangular in shape. However, it may also have two or four square faces, yet still be a rectangular prism.
A rectangular prism.... has four rectangular, and two square faces.