What would we look like in the 4th dimension? And what is the fourth dimension, anyway? Well, imagine you wake up and can’t recognize your room. That’s definitely it, but your desk in on the wall, and the dresser is on the ceiling. It’s closed, but you can somehow see every folded t-shirt in it! You wipe your eyes. Nothing changes. This isn’t a dream. Welcome to the 4-dimensional world! Still not clear?

Okay, to understand the 4th-dimensional world, we need to look at the others. So, a 0-dimension world is just a point. Now, if you expand it, you get a 1-dimensional world that’s a simple line. It only has one measure, and that’s length. Now we’ll add another line perpendicular to the one we have. We get a flat surface with length and width, like a piece of paper. But the objects of this world have 3 measures: length, width, and height. Then where to put the next perpendicular line to get the 4th dimension?

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