Answer:
for prism
let n= no.of sides of the shape of end face
face=n+2
vertices=2n
edge=3n
atq...shape of prism. F. V. E
triangle n=3. 5. 6. 9
rectangle. 6. 8. 12
Pentagon. 7. 10. 15
hexagon. 8. 12. 18
by puuting value of n in above formulas a for f v and e
