There are two more Platonic solids: an octahedron which has 8 faces that are all triangles and an icosahedron which has 20 faces that are all triangles.

How many edges would each of these solids have? (Keep in mind that each edge is used in two faces.)
Use your discoveries from the activity to determine how many vertices each of these solids would have.
For all 5 Platonic solids, determine how many faces meet at each vertex.