Question

write an application to the post master to issue the demand draft amount in place of your father, as your father is out of town, please provide appropriate documents​

Answer 1

Answer:

V - E + F = 2; or, in words: the number of vertices, minus the number of edges, plus the number of faces, is equal to two. which is what Euler's formula tells us it should be. If we now look at the icosahedron, we find that V = 12, E = 30 and F = 20