Question

. If ∠A and ∠B are two adjacent angles of a parallelogram. If ∠A = 57°, then ∠B = ?​

Answer 1

I think 123°

I think I have said

ok

hope it helped you

Answer 2

Answer:

123°

Step-by-step explanation:

We know that the sum of adjacent angles of a parallelogram make 180°

Therefore,

angle B= 180°-angle A

=180°-57°=123°