What are 2 and 3 dimensional figures?

A point is 0-dimensional ... it has no length, breadth or height.

A line is 1-demensional ... it has length, but no breadth or height.

A square, circle, triangle etc is 2-dimensional ... each of them have length and breadth, but no height

A cube, cylinder, sphere etc is 3-dimensional ... each of them have lenght, breadth and height.