This paper is about -triangles, which are the simplest nontrivial examples of -polytopes: convex hulls of a subset of vertices of the unit -cube . We consider the subclasses of right -triangles, and acute -triangles, which only have acute angles. They can be explicitly counted and enumerated, also modulo the symmetries of .
@article{702926, title = {Counting triangles that share their vertices with the unit $n$-cube}, booktitle = {Applications of Mathematics 2013}, series = {GDML\_Books}, publisher = {Institute of Mathematics AS CR}, address = {Prague}, year = {2013}, pages = {1-12}, mrnumber = {MR3204425}, zbl = {1340.52020}, url = {http://dml.mathdoc.fr/item/702926} }
Brandts, Jan; Cihangir, Apo. Counting triangles that share their vertices with the unit $n$-cube, dans Applications of Mathematics 2013, GDML_Books, (2013), pp. 1-12. http://gdmltest.u-ga.fr/item/702926/