ELI5: Explain Like I'm 5

Hidden faces

Okay, let's pretend you have a box, and you draw a happy face on one side of the box. But the box is closed, so you can't see the face. That's a hidden face!

Now, imagine you have a bigger box and you draw happy faces on all the sides, but you can't see them all at once because they're hidden by the sides that are touching each other. That means there are more hidden faces!

Sometimes, when we think about hidden faces, it's like a puzzle. We have to find all the faces that are hiding. It's like playing hide-and-seek with faces! This can be fun, but it can also be tricky because some faces are really hard to find.

Overall, hidden faces are all around us, even in things we don't expect, like buildings or cars. But if we look closely and have a good understanding of 3D shapes, we can find them and say "ah-ha!"