There is no shape which has only three rectangle. And, if it has other faces, then there are many possibilities.
It is a triagular prism
triangular prism
There isn't: for all faces to be rectangles there have to be 6, of which opposite sides are equal in length and breadth. (A cuboid)
A triangular prism
If you stack rectangles, the resulting 3-D shape will be a rectangular prism, also known as a cuboid. This shape has six rectangular faces, with opposite faces being congruent. The dimensions of the prism depend on the size and number of rectangles stacked. If the rectangles are arranged in a specific way, they can also form other shapes, but the most common outcome is a rectangular prism.
squares or rectangles
It is a triagular prism
A triangular prism.
triangular prism
There isn't: for all faces to be rectangles there have to be 6, of which opposite sides are equal in length and breadth. (A cuboid)
A triangular prism
There is no 3D shape with 6 faces: 4 rectangles and 2 triangles. See the link for all forms of hexahedra.
It is a triangular prism that fits the given description.
If you stack rectangles, the resulting 3-D shape will be a rectangular prism, also known as a cuboid. This shape has six rectangular faces, with opposite faces being congruent. The dimensions of the prism depend on the size and number of rectangles stacked. If the rectangles are arranged in a specific way, they can also form other shapes, but the most common outcome is a rectangular prism.
It is called a rectangular prism.
A triangular prism.
Cuboid