Answer:
adjacent and supplementary
Step-by-step explanation:
∠ 1 and ∠ 2 are next to each other, that is adjacent.
∠ 1 and ∠ 2 form a straight angle and are supplementary.
angles 1 & 2 are adjacent and supplementary angles
both total 180°
It is known as the Law of conservation of energy
subtract 8x from both sides
this is the first step
