Point S is the point of concurrency of the angle bisectors of ΔWXY. Triangle W X Y is shown. Point S is the point of concurrency. Lines are drawn from each point of the triangle to point S. Lines are drawn from point S to the sides of the triangle to form right angles. Line segments S V, S U, and S T are formed. What is SU? SU = 5 SU = 7 SU = 12 SU = 13