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If G is a regular graph and d, e and v denote the degree, the number of edges and the number of vertices respectively, then e = dv/2.

Prove the above statement

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

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**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

since a line segment or "edge" has two ends, then yes, 1/2 is the formula. v=dots d=ends of lines on a dot. e=#ofline segs

Pretty obvious really if you draw a few. but to prove it, ask Ricky.

**igloo** **myrtilles** **fourmis**

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Ricky? He's gone

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'But our love is like the wind. I can't see it but I can feel it.' -A Walk to remember

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