For the first part it says " use this rule and the previous ones to answer the following questions about the figures shown. Assume that the 2 horizontal lines are parallel "

XP = 4q = 70 p Xr = As = X1 = Xu = S ZW= W Plumbing A plumber connects the two vertical sections of pipe shown in Figure (1) with a 30 elbow (angle a). What angle x does the elbow make with the upper pipe? X $ 30 . C b Figure (1) Figure (2) Figure (3)