Which angles are supplementary
to <6? Select all that apply.

∠3

Step-by-step explanation:

Supplementary angles are angles that add up to 180°. Angle 6 is a right angle, so it's worth 90°. This means that the other angle(s) have to be 90° as well.

As you can see, the other angle with 90° is angle 3, thus, making it the correct answer.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

D

Step-by-step explanation: I think it might be D because at the end it is going higher and at the very right. Correct me if I'm wrong but it should be D.