Answer:
[tex]TU[/tex] and [tex]TS[/tex] (with arrows on top)
Step-by-step explanation:
The sides of any angle are rays. This are half lines, which in your case both start at the point T, and one goes towards point U, while the other one goes from toward point S. So I would write TU (with a little arrow symbol on top). and in the other box I would write TS also with a little arrow symbol on top.
