Hey there!
So, when finding a congruent angle, when would need to find on the shape, which one's look congruent, ofcourse.
So by looking at them,
[tex](ST) \ and \ also \ (WX) \ seem \ to \ be \ congruent[/tex]
There are both (3,2) ; (1,3), even thought they're are in opposite quadrants.
Hope this helps!