I did some research relating to this area for: [$5$ dimensional space over $\mathbb{R}$][1] There isn't much to be found on the Internet other than at Wikipedia, except for: [A FAMILY OF MARKED CUBIC SURFACES AND THE ROOT SYSTEM $D_5$][2], by Elisabetta Colombo and Bert Van Geemen which is detailed but has no pictures. [1]: https://math.stackexchange.com/questions/1259887/5-dimensional-space-over-mathbbr [2]: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.236.8252