melanyyy01 melanyyy01 12-10-2022 Mathematics Answered In Exercises 19-22, are AC and DF parallel? Explain your reasoning. 19. 21. A 57° B D D 123⁰ E CF 62⁰ A B 62° E с F 20. 22. A B D A 143⁰ D 37° 65° E 115° E с B C 65° F