Answer:
-rectangle
-triangle
-line segment
-point
Explanation:
A rectangle is formed when the intercepting plane is parallel to two of the faces of the prism
A triangle is formed when the plane cuts the prism near only one vertex, it is not parallel to the faces and 3 edges are cutted
A line segment is formed when the plane "touches" only one edge of the prism
A point is formed when the plane "touches" only one vertex of the prism