What the hell am I looking at here? I love it, but I can't figure out how many dimensions are supposed to be represented.

A googolplexagon!

I looked that up

here:

A googolplexagon is a polygon with googolplex sides, it is the largest finite number of sides measured on a polygon, and if drawn to 1e+27 times the radius of the observable universe, it would differ from a circle by 1 googol of a Planck length.

Then I looked up Platonic solids because I have a (false) memory of there being a sixth one discovered in the 80s or 90s.

That lead me to this:

I already watch his videos - as does my 6 year old daughter! - so I was thrillied to find something canonical.