Question

How many dimensions does a plane have?

Answer 1

Dimension of the plane :

In mathematics, a plane is a flat, two-dimensional surface, that extends indefinitely. A plane is the two-dimensional analog of a point (zero dimensions), a line (one dimension), and a three-dimensional space. Planes can arise as subspaces of some higher-dimensional space, as with one of a room's walls, infinitely extended, or they may enjoy an independent existence in their own right, as in the setting of two-dimensional.

Planes are two-dimensional. Shapes in the plane do not have any thickness.

Therefore, 2D shapes are flat plane figures that have only two dimensions – length and width.