How do I get from Porte Maillot to La Defense?

Question

I have a metro map and it seems that they are close but there isn't a train that runs between the two? So what is the easiest way to get there?

Answer 1

I'm not sure what map you're looking at but Metro line one runs from Porte Maillot to La Defense.

Answer 2

They are both on the metro line 1 :

http://en.wikipedia.org/wiki/Image:Metro...