Euler’s Formula

The Swiss mathematician

Leonard Euler’s

Demonstration

Showing that the

Numbers

Of vertices

Of edges

And faces

Of a poly-

he-

dron

Satisfy

Gratify

The formula

V – E + F = 2

That is you

Where the number

Of nodes

Where the nimber

Of arcs

Where the number

Of re-

gions

Into which

A network

Separates

The plane

That’s your game