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 pyramid with a quadrilateral base. * * * * * A triangular dipyramid or a quadrilateral based pyramid.
a quadrilateral
Quadri means four. Lateral means sides. A quadrilateral has four sides.
A 3d parallelogram is called a "Parallelepiped"
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 parallelopiped.
2d
A quadrilateral pyramid.
A pyramid with a quadrilateral base. * * * * * A triangular dipyramid or a quadrilateral based pyramid.
The another name of 3D version of diamond kite is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. The rhombus is often called a diamond,
quadrilateral
It is an inscribed quadrilateral or cyclic quadrilateral.
It could be a triangular prism or a quadrilateral based pyramid.
a quadrilateral
It is a quadrilateral based pyramid.
a quadrilateral