This polyhedron is called a cuboctahedron.
Here is a wireframe version, with just the edges, and no faces.
A cuboctahedron has 6 square and 8 triangular faces.
If you were working with clay, you could make a cuboctahedron
by slicing the corners off a different polyhedron.
In fact, you can do this in two different ways.
Describe how you could do this.
