Question

find the angles of a parallelogram ABCD in which angle A=2 angleB​

Answer 1

Let angle B be x

Then, A is 2x

Sum of interior angles of a parallelogram  is 360°

If A is 2x then C is also 2x (because  opposite angles are equal)

If B is x then D is also x (because  opposite angles are equal)

ATQ,

2x+x+2x+x=360

6x=360

x=60°

B and D are 60°

A and C are 60*2=120°