To prove that △lmn ~ △xyz by the sas similarity theorem, it also needs to be shown that.
∠n ≅ ∠z
∠n ≅ ∠x
∠l ≅ ∠z
∠l ≅ ∠y

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?