[Mathew]

Lets discuss the right arm....

Due to the fact that the right forearm can only move straight up and down from its elbow location this means that at any point the entire right arm is always in a plane....



In this plane the closer the right hand goes to the right shoulder - the greater the angle between the upper arm and the forearm. This always creates a triangle shape between the right shoulder to hand - right shoulder to elbow - elbow to hand, except when it is inline. It is actually the right shoulder to hand line that is the third line on the law of the triangle per chapter 6.



PS - Im looking for this to be a active discussion. If you have any input to give or feel you want to add something - please discuss