Question

using Euler,s formula find the unknown faces ?,5,20. vertices 6,7,? edges 12,9,?​

Answer 1

Answer:

here is your answer mate

Step-by-step explanation:

F+V=E+2

F+6=12+2

F=8

F+V=E+2

5+V=9+2

V=6

F+V=E+2

20+12=E+2

E=30