- Since every vertex of the Rhombicuboctahedron is degree four, every face of the Deltoidal Icosahedron has four sides.
- Since every face of the Rhombicuboctahedron is either a triangle or a square, every vertex of the Deltoidal Icositetrahedron has degree three or four.
The Deltoidal Icositetrahedron looks like the little brother of the Deltoidal Hexecontahedron from Day 196:
Thingiverse link: http://www.thingiverse.com/thing:273327
Settings: MakerWare custom profile described in Day 194, on a Replicator 2.