Using Euler’s formula, complete the following table:

Write the number of faces, vertices and edges in

(i) an octagonal prism

(ii) decagonal pyramid.

If a polyhedron has 7 faces and 10 vertices, find the number of edges.

If a polyhedron has 8 faces and 8 vertices, find the number of edges.

Can a polyhedron have 15 faces, 30 edges and 20 vertices?