That is the starting point; it will depend on your room and how much stuff is in it and whether or not you have carpet or hard (wood, tile, etc...) floors as to what sounds best. Some speakers may like to be a little closer together and others might want to be further apart with a lot of toe-in. Mine are a little less than equilateral and pointed directly at the center of the listening position but I've tried other speakers in my setup and have had different results. A little experimentation and the best position should be pretty easy to find.
