$120\degree$   

 $60\degree$  

 $90\degree$  

 $360\degree$  

 $-90\degree$   

90

 $90\degree$  

-90

180 $\degree$   

180

 $-360\degree$   

-360

 $30\degree$   

 $60\degree$  

 $-30\degree$  

 $-60\degree$  

 $120\degree$   

 $150\degree$  

 $90\degree$  

 $360\degree$  

 $45\degree$   

 $-60\degree$  

 $-30\degree$  

 $-45\degree$