Question

angle ABC = find x
please give ans fast​

Answer 1

Answer:

x = 120°

Step-by-step explanation:

In ∆ ABC,

By angle sum property,

=> 30 + 40 + ACB = 180°

=> ACB = 110°

Now in line BD,

By linear pair,

=> ACB + ECD = 180°

=> ECD = 70°

Now in ∆ ECD,

Sum of two interior angles = Exterior angle

=> ECD + EDC = x

=> x = 120°

hope it helps...