Question

Using Euler's formula, find the unknown.​

Answer 1

Answer:

Step-by-step explanation:

Euler's formula = F + V - E = 2

1)

Let the faces be F

we have ,

F + V - E = 2

F + 6 - 12 = 2

F - 6 = 2

F = 2 +6

F = 8

So,

the faces are 8

2)

Let the vertices be V

F + V - E = 2

5 + V - 9 = 2

V - 4 = 2

V = 6

SO,

the vertices are 6

3)

Let the edges be E

F + V - E = 2

20 + 12 - E = 2

32 - E = 2

E = 32 - 2

E = 30

SO,

The edges are 30

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