When in euler's formula when vertices and edges are given how to found the faces?

Euler's formula states that for a convex polyhedron, the relationship between the number of vertices (V), edges (E), and faces (F) is given by ( V - E + F = 2 ). To find the number of faces when the number of vertices and edges are known, rearrange the formula to solve for ( F ): ( F = E - V + 2 ). Simply substitute the values of V and E into this formula to calculate the number of faces.