Question

What is another name for angle 1?

∠JNL
∠N
∠MNK
∠NLJ

Answer 1

Drawing coming.

Answer 2

If angle 1 is ∠JNL, it's an obtuse angle, supplementary to to angles JNM and LNK.

It's supplementary because it helps finish the 180 degrees (straight line) with those two other angles. Complimentary on the other hand helps finish the 90 degree right angle with another angle.
A quick tip on how to remember complementary from supplementary: someone will "compliment" you on your grades if you get a 90 on a test.

Answer 3

So, what would be the answers?

Answer 4

Ah, i didn't see the '1' there before in the drawing. So it looks like 1 is the angle LNM, a 180 degree angle. 180 degree angles are the ones straight across.