Answer thise pls

Solution :

Euler's Formula : F + V - E = 2 where F : Faces , V : Vertices and E : Edges
F = 8 , E = 12
8 + V - 12 = 2
V = 2 +12 - 8
= 14 - 8
= 6
Therefore Vertices = 6

V = 6 , E = 9
F + 6 - 9 = 2
F = 2 - 6 + 9
= 11 - 6
= 5
Therefore Faces = 5