What is the measure of $\angle x$ ?
\(\boxed{75^\circ}\)
Step 1 :\(50^\circ + 55^\circ + x^\circ = 180^\circ\)
Step 2 :\(x = 180^\circ - 50^\circ - 55^\circ\)
Step 3 :\(x = 75^\circ\)
Step 4 :\(\boxed{75^\circ}\)