markvmc wrote:I guess I don't understand the triangle at all. the pics don't help. Anywhere you have three players, you can draw a triangle linking them up.

The triangle is visible only if spacing between players is good. There are many things to it but spacing is a must and then all 3 players involved have to move together to keep triangle from collapsing. When ball goes to other 2 players a new triangle can be formed if shot-clock allows or they run 2-man game.
So passing and spacing is the main point. It takes constant involvement of all 5 players in the offense. With the ball and without.
Its a lot of mental and physical work. So it is easy to see who is willing and capable and who should sit or go.