Question

Use Euler's Formula to find the missing number.

Faces:_____
Edges:15
Vertices: 9

Answer 1

do you know Euler's Formula @NiraQ

Answer 2

the Euler's formula is..
V - E + F = 2
V is the vertices
E is the edges
F is the faces
V - E + F = 2
subtract V and add E on both sides
F=2-V+E
plug the value
F=2-9+15
F=8
the answer is..
faces =8

Answer 3

Are you understand @NiraQ