A. 40

B. 60

C. 140

D. 80

measure of 4=360-(100+120)

=360-220

=140

so option C is the answer

D. 80 is your answer

Step-by-step explanation:

If ∠6 is 120 and ∠5 is 100 we see a pattern forming for example, if we divide 120 by 6 we get 20 this is the same for if we divide 100 by 5, we get 20. Now all we need to do for ∠4 is to multiply it by 20 = 80, which is your answer!

Have a great day and I hope this helps!

add an image, and i will answer

step-by-step explanation:

wait this depends wether emily and zach how they are thinking.

yes they are the same.