I'd say look at photos of them from a front, and sideways view :)
The final section of ballet class is center.
The teacher assembles steps that accelerate into what is called grand allegro. This combination may include skips, jumps, leaps, and turns.
It depends on what type of mad reaction you're looking for. you could;
1. Clench your fists and maybe stomp your foot if you're looking for an exaggerated, maybe even comical display of anger
2. turn away slightly and grab your head/hair in a slightly hysterical anger
3. Shake your fist at them
4. Cross your arms over your chest
Or some combination of those things, I hope that gives you some ideas!
