[emmap21]

You might want to look at Simplex to describe better and more rigorously. Simplex is the most basic structure to describe a space in n-dimension.

0-simplex: a point.

1-simplex: a segment (points and lines)

2-simplex: a rectangle (points, lines, and surfaces)

3-simplex: a tedrahedron (points, lines, surface and a 3D space that most of human can comprehend visually)

4-simplex: everything above and the whole combination of these element in algebra.

This is how mathematician and physicists solve problems. Time is a separate element in our equations that why we often talk space-time, not just space

https://en.wikipedia.org/wiki/Simplex