In the diagram, which angles form a linear pair? check all that apply.

The two angles, when added, should form a straight line. 

A. ∠RST and ∠RSV form the line VT
B. ∠RST and ∠TSU form the line RU
C. ∠RST and ∠VSU form opposite angles with each other
D. ∠TSU and ∠USV form the line VT
E. ∠TSU and ∠RSV form opposite angles with each other

So, the answers are A, B and D.