Answer:
Supplementary
Step-by-step explanation:
<1 and <2 are supplementary angles because they complete each other to 180°
∠1 and ∠2 are supplementary (adjacent as well) .
∠1 and ∠2 are supplementary because m∠1 + m∠2 = 180°
∠1 and ∠2 are adjacent because they share the same vertex and a leg (side)
