Answer:
Step-by-step explanation:
14. ∠AED= 180-∠AEC =180-41 =139
15. ∠CEF = 180 - 90= 90
16.∠DEB= ∠AEC = 41 [They are vertical angles]
17.∠BEF = 90 - ∠DEB =90-41 =49
18.∠CEB =∠CEF +∠BEF =90+49 =139
19.∠AEF =∠CEF + ∠AEC =90+41 =131
