Using Euler's formula:
F + V - E = 2
where F is the number of faces, V is the number of vertices, and E is the number of edges.
Plugging in the given values:
F + 23 - 39 = 2
Simplifying:
F - 16 = 2
Adding 16 to both sides:
F = 18
Therefore, the missing number is 18.
Use Euler's formula to find the missing number.
Vertices: 23
Edges: 39
Face: ?
1 answer