Perfect Circles and Cubes in 3D Space

This is something that’s confused me immensely for quite a while, and I’ve seen that a lot of people have felt the same way. Since I don’t deal with plotted perspective much, I’ve mostly just ignored it but it has had some negative impacts on my work in the past. So, here’s the results of some research I’ve done into the subject. In looking into how to properly construct ellipses inside of planes, I also discovered some neat tricks that allow us to easily construct perfect cubes in space - a very handy tool