Draw two ordinary 3D cubes in 2D space, one encompassing the other, separated by an "unseen" distance
Then draw lines between their equivalent vertices.
The eight lines connecting the vertices of the two cubes in this case represent a single direction in the "unseen" fourth dimension.
<h3>What is a 4 dimensional shape?</h3>
A four-dimensional shape (4D) is a mathematical extension of a three-dimensional or 3D space.
Three-dimensional space is the simplest possible abstraction of the observation that one only needs three numbers, called dimensions, to describe the sizes or locations of objects.
Using Hinton's method;
Draw two ordinary 3D cubes in 2D space, one encompassing the other, separated by an "unseen" distance
Then draw lines between their equivalent vertices.
The eight lines connecting the vertices of the two cubes in this case represent a single direction in the "unseen" fourth dimension.