Question

HOW MANY FACES, EDGES, VERTICES OF THE FOLLOWING,
1. A prism whose base is polygen of "n" sides.
2.A pyramid whose base is polygen of "n" sides.

Answer 1

1. A prism whose base is polygon of "n" sides will have 
a. n+2 faces - n lateral faces(rectangles), one top and one bottom
b. 3n edges - n on top, n on bottom, n on lateral surfaces
c. 2n vertices - n on top and n on bottom

2. A pyramid whose base is polygon of "n" sides will have 
a. n+1 faces - n lateral faces(triangles) and one bottom
b. 2n edges - n on bottom, n on lateral surfaces
c. n+1 vertices - 1 on top and n on bottom surface

Answer 2

1
faces=n+2 edges=3n vertices=2n
2
faces=n+1 edges=2n vertices=n+1