Nathan G. answered 05/12/20
Undergrad Math, Programming, and Art Tutor
Hey Skylar,
From the definition of adjacent angles, two angles are adjacent if they share a side and have the same corner point. So you are correct, there are 4 adjacent angles: Q&R, R&S, S&T, and T&Q. In this case we can just count the shared sides, which is 4, and that verifies your answer was correct.
-Nathan