Answer:
Angles: adjacent
x = 18
Explanation:
Adjacent Angles: angles that border each other to the left/right
Vertical Angles: opposite set of angles that are congruent
Given these definitions, these angles are not only adjacent, but also right angles. Right angles add to 90°.
Step 1: Combine like terms.
Step 2: Divide both sides by 5.
Therefore, the answer is adjacent and x = 18.