Negative Cube?

Question

If there was a cube whose sides are negative number, what would this be? A black hole or something?

Answer 1

The sides can only be negative if they are vectors, which have size and direction. Normally lengths of sides are declared as scalar values so positive.
A vector deception is just negative relative to the origin, move the origin and they are positive.
So just a normal cube.

Answer 2

Although we can assign negative numbers to the sides of a cube by translating the origin of a graph, there really is no such thing as a negative tangible object. I can't show the cube here, because Answers is limited in editing capability, but check this out.

Suppose we have length of rope L = 1 meter. We can graph it like:

-X------------------------ 0==========1--------------+X

Which clearly show that one meter of rope running from 0, the origin to 1, the one meter mark, on the plus side of the origin. But by mathematically moving the origin to the right 1 meter, I can also write:

-X------------------------ -1==========0--------------+X

This is mathematically correct, showing a negative length of rope. But it's the same real rope and it exists in ordinary space and time.

Same thing for your cube and any other real object you can think of; there is no such thing as a negative object in real space and time, but we can always graph it as such.

Answer 3

In three-dimensional coordinate system, it will be a cube in the (-x, -y, -z) - octant.