Question

In ∆ ABC, ∠BCD is the exterior angle . If ∠A= 50° and ∠B = 30° , then m∠BCD = ?​

Answer 1

Answer:

150°

Step-by-step explanation:

If BCD is exterior then other part of B is interior. The other part measures 30°( given).

Hence 180-30=150°

Answer 2

Answer:

80°

Step-by-step explanation:

exterior angle is equal to sum of interior opposite angle

so

50+30=80°