Yes
The cross section can be a triangle, rectangle or a hexagon.
rectangle
It is a rectangle.
rectangle
It is a rectangle.
It is a rectangle.
A cube cannot be a rectangular prism, as the cross section of this prism would be a rectangle, as opposed to a square. A square prism (if that is what it is called) could be a cube, but is not necessarily.
A cylinder has a circular cross section, a rectangular prism has a rectangular cross section.
A rectangular prism has a rectangular cross section whereas a cylinder has a circular cross section
The answer depends on the inclination of the intersecting plane. The cross section can be a point, a triangle, a rectangle, a pentagon or a hexagon.
A triangular prism has a triangular cross-section. A rectangular prism has a rectangular cross-section.
The cross-section of a rectangular prism can be any one of:a pointa trianglea rectanglea hexagon.