Stellation is the process of constructing polyhedra by extending the facial planes past the polyhedron edges of a given polyhedron until they intersect. The set of all possible polyhedron edges of the stellations can be obtained by finding all intersections on the facial planes. Since the number and variety of intersections can become unmanageable for complicated polyhedra, additional rules are sometimes added to constrain allowable stellations. ~ Wolfram MathWorld
![Trams in Savannah are Newyearly Christmasy. To provide streetcar service a 1930s-era W5-class streetcar (#756), originally from Melbourne, Australia, was purchased by the city for about $207,000 and converted to power its motors with an onboard biodiesel-fueled generator and batteries as a hybrid drive for an additional $100,000.[5] Hence it is a form of diesel railcar. The streetcar was nicknamed "Dottie" — a reference to the Savannah DOT that completed the project.](http://distilleryimage1.s3.amazonaws.com/a5192358537a11e28e2c22000a1fb747_5.jpg "Trams in Savannah are Newyearly Christmasy. To provide streetcar service a 1930s-era W5-class streetcar (#756), originally from Melbourne, Australia, was purchased by the city for about $207,000 and converted to power its motors with an onboard biodiesel-fueled generator and batteries as a hybrid drive for an additional $100,000.[5] Hence it is a form of diesel railcar. The streetcar was nicknamed \"Dottie\" — a reference to the Savannah DOT that completed the project.")
