Net is a two-dimensional pattern of a three-dimensional figure that can be folded to form the figure.

In other words, net is a flattened three-dimensional figure which can be turned into the solid by folding it.

Examples of Net

The following is the net of a pentagonal pyramid.

The following is the net of a rectangular prism.

Video Examples: Geometry Nets

Solved Example on Net

Ques: Which of the nets can be folded to form a cube?

Choices:

A. Net (c)
B. Net (b) and Net (c)
C. Net (b), Net (c), and Net (d)
D. Net (b)
Correct Answer: D

Solution:

Step 1: A cube does not have a rectangular base or face. So, net (a) does not form a cube.
Step 2: A cube has only 6 squares in it. Nets (c) and (d) have 7 squares. So, they do not form a cube.
Step 3: If you fold net (b) with square 1 as the base, you get a cube. So, net (b) folds to give a cube.