Two Dimensional Drawings of Three Dimensional Objects

Two-dimensional structure:
A two-dimensional structure comprises two dimensions, namely length and breadth.  2D shapes and structures are also characterised as plane shapes/figures or plane structures. Areas are present in such structures, but no volume is present in 2D forms. Every side of a 2D object is formed using straight lines. The X-axis, as well as the Y-axis, is often used to design two-dimensional structures.

Three-dimensional structure:
3D denotes three dimensions. 3d objects make up three-dimensional shapes with length, breadth, as well as height. 
Houses, balloons, cylinders, or anything else with three aspects of dimensions are examples of such structures in everyday life.