Platonic solids in the next dimension

We will discuss the six regular solids in dimension 4,
including building a projection of the 4-cube, along
with viewing some other models. 

Visual abstract:  https://franksottile.github.io/talks/17/4D/index.html

Instructions for making a 4-cube:
https://franksottile.github.io/research/stories/hyperCube/index.html