Question

help..! answer as fast as possible please​

Answer 1

its A for the second one

Answer 2

Step-by-step explanation:

euler formula=f+v-e=2

=f+6-9=2

=f+3=2

f=2+3

f=5

2x+3x+4x=180

9x=180

x=180/9

x=20

2,3,4x=40,60,80