Answer:
reflex angle EOC = 250°
Step-by-step explanation:
reflex angle EOC
= angle COA + angle DOA + angle DOB + angle BOE
angle DOB = 40° (given)
angle DOB + angle DOA = 180° (linear pair)
angle DOA = 180° - 40°
angle DOA = 140°
angle COA + angle DOA = 180° (linear pair)
angle COA = 180° - 140°
angle COA = 40°
angle COA + angle BOE = 70° (given)
angle BOE = 70° - 40°
angle BOE = 30°
Now,
we have,
reflex angle EOC = 40° + 140° + 40° + 30°
= 250°
