Determine whether this is a polyhedron. then identify the solid. if it is polyhedron name the bases, faces, edges, and vertices.

The first one is 2/3the second is 1/160the third is 4/125

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?