a mathematical formula in complex analysis that establishes the deep relationship between the trigonometric functions and the complex exponential function Euler's formula states that, for any real number .
V - E + F = 2
where
- V = number of vertices
- E = number of edges
- F = number of faces

Tetrahedron
V = 4
E = 6
F = 4
4 - 6 + 4 = 2

Cube
V = 8
E = 12
F = 6
8 - 12 + 6 = 2

Octahedron
V = 6
E = 12
F = 8
6 - 12 + 8 = 2

Dodecahedron
V = 20
E = 30
F = 12
20 - 30 + 12 = 2

Icosahedron
V = 12
E = 30
F = 20
12 - 30 + 20 = 2

Buckyball
V = 60
E = 90
F = 32 (12 pentagons + 20 hexagons)
60 - 90 + 32 = 2
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