Question

What is m∠1? (made me add more word for sum dum reason)

Answer 1

Answer:

A

Step-by-step explanation:

1 is linear with 138, and they must add to 180, so 180 - 138 = 42

Answer 2

It’s A. 42° Because together, the 138° angle and angle two need to equal 180°. So do 180-138=42