Question

ABCD is a parallelogram if angle A is equals to 60 degree then find angle D + b​

Answer 1

angle a +angle b =180 (co interior angle)

angle b =180-60= 120

angle b =angle d ( opposite angles)

angle b+ angle d =240

Answer 2

Answer:

∠D+∠B = 240°

Step-by-step explanation:

As we know that in a

Opposite angles are equal and Adjacent angles are  

angles of each other.

∴ ∠A+∠D = 180°

⇒∠D = 120°

Also,

∠D = ∠B = 120°