"Fouetté en tournant" - Geometric Study

There you can see a spectacular ballerina doing 32 "fouettés en tournant". This is a step of ballet classic dance that seems like a whip in turn. The work leg is stretched and tided up during the turn. The head is keeping looking at a fixed point and arms help to do the turn.

I'm going to explain all the geometric figures that helps us to do this step in a correct way. But, before starting, I would like yo show some pictures of the fouetté step by step:

So, as we can see, it's important to keep the balance, so we have to create a straight line between foot fingers until our head:

Besides, we have to maintain the back in this line, so, we make a T between our torso and our shoulders:

As I said before, our arms helps us to turn, so, we use them making a parallel line with the leg in movement: 

Just before we started the turn, we make three movements with our work leg:

- Shift of 90º of our leg in front of us.

- Shift of 90º of our leg to the side of the turn.

- Triangle between the work leg and the base leg.

Finally, there, you can see how all this figures, movements and forces, makes this beautiful step: