A skew triangular prism.
a cube
If you take a regular four sided pyramid and chop off the top, parallel with the base, the left over piece would be a solid with four identical trapezoidal faces and a square top and bottom. The only name I know is 3-D trapezoid.
a cube
2d
A cube is a 3D shape characterised by six identical square faces and 8 vertices.
There is no shape which has identical parallelogram faces.
A cube
Cube
it is a decogonanon it is a decogonanon
Prism
prism
A skew triangular prism.
A cube satisfies that description.
There is no such thing as a 3d hexagon.There cannot be a 3d shape with regular identical hexagons. A 3d shape with 6 faces is called a hexahedron, and there are several topologically different variants.
A rectangular tube.
A prism.