Referring to the figure, the triangles below are congruent. Find x, y, and z. a. x = 5 units; y = 12 units; z = 13 units b. x = 13 units; y = 12 units; z = 5 units c. x = 12 units; y = 13 units; z = 5 units d. x = 12 units; y = 5 units; z = 13 units