A tetrahedron.
A quadrilateral.
a parallelogram
It is a tetrahedron which is a triangular based pyramid
A quadrilateral is a plane or 2d figure with four sides. A 3d shape (object) has a name ending with -hedron, eg a tetrahedron which is a four sided 3d shape. A 3d quadrilateral has no meaning. Sides (edges) do exist in 3d shapes, but a more pertinent attribute is faces. Do you mean by "3d quadrilateral" a 3d shape which has a quadrilateral as a base and at most 4 or 5 other sides, ie a pentahedron (usually called a square pyramid) or a hexahedron (some types of which are called cuboids and cubes)? Please re-ask using consistent terminology, eg What is a 3d shape with one pair of parallel faces and 6 faces?
a 4 sided 3d shape is called a triangular prism!!!!!!!!!!!!!!!
Triangular Pyramid.
A tetrahedron.
tetrahedron
A three-sided pyramid, also termed a triangular prism.
A quadrilateral.
quadrangle
Quadrilateral
Get any 4 sided shape and vary all the sides to different lenghts and make it look weird-there you go an irregular 4 sided shape.
square
a square
square