Answer:
6. <CAD + <DAB=90 degrees.
7. <EDB and <BDA share a common side.
8. <JAE and <DAB are adyacente angles.
9. <CFB and <EFD are acute vertical angles.
10. <BFD and <CFE are obtuse vertical angles.
11. <CDH + <GDE = 90 degrees
12. <BCF + <BAD = 90 degrees
13. <CFB + <BFD = 180 degrees
14. <CFB and <BFD
15. <GDE
16. <FBA
17. <DAB
18. Turn 23 degrees northwest.
Explanation: