if and 4d object casts an 3d shadow on a 3d space, what does it cast on an 2d space ?

Question

I was exploring the internet for 4d space and
object simulations when I found a very interesting site that presents and explains it nicely
But I couldn’t find anywhere mention of what a 4d object projects onto 2d space

Here is the site for anyone interested:
https://ciechanow.ski/tesseract/

Im sorry for bad gramar english is my third language

In: Physics

Answer 1

A projection on 2d space (normally called a plane) is necessarily 2 dimensional. Since your computer screen (and eyes, mostly) is 2 dimensional, that website is actually already showing you a 2d projection! Its just that your brain is pretty good at turning 2d projections into 3d objects so it can seem 3d.