No, it is not.
A rectangular prism or a hexahedron.
Some hexahedra are prisms or pyramids.
A hexahedron is a 3D shape with 6 faces. It CAN be a prism whose base is a square. But that is only one example. It can also be a prism whose base is any quadrilateral. It can also be something like a pentagonal pyramid (i.e. the base is a pentagon and the sides are made up of 5 triangles.)
Yes, but only if one face of one prism is congruent to a face of the other.
No, it is not.
An irregular hexahedron.
Square
Square
A hexahedron with 8 vertices.
A rectangular prism or a hexahedron.
It is a regular hexahedron - a prism with each side being a square.
It is a rectangular prism or a right hexahedron.
It is a hexahedron, all of whose faces are rectangles.
Some hexahedra are prisms or pyramids.
A hexahedron is a 3D shape with 6 faces. It CAN be a prism whose base is a square. But that is only one example. It can also be a prism whose base is any quadrilateral. It can also be something like a pentagonal pyramid (i.e. the base is a pentagon and the sides are made up of 5 triangles.)
Yes, but only if one face of one prism is congruent to a face of the other.