Water the number of vertices, edges and faces of a pentagonal pyramid ?

Write the number of vertices, edges and faces of a pentagonal prism ?

If a, b and c are respectively the number of faces, edges and vertices of a pentagonal pyramid, then the value of ((a + b + c)/( 2)) - 12 is

If a, b and c are respectively the number of faces, edges and vertices of a pentagonal pyramid, then the value of ((a-b+c)/(2))-2 is

Make a conjuecture What do you think is true about the relationship between the number of vertices, edges and faces of a polyhedron ?

If x,y and z respectively represents the number of faces, edges and vertices of a hexagonal pyramid, then the value of ((x-y+z)/(2))^(2) is

If the number of vertices, edges and faces of a rectangular parallelopiped are denote by v, e and f respectively , the value of (v - e + f) is

No. of faces of a pentagonal pyramid are____