Adjacent angles are two angles that share a common side and a common vertex, and do not overlap. To determine which pair of angles is adjacent, you simply need to look for angles that meet these criteria.
For example, consider angles A and B. If angle A’s endpoint is the same as angle B’s, and they share a line segment as one of their sides, then they are adjacent angles. If the angles are positioned such that they form a straight line or an L-shape together, they are considered adjacent as well.
In summary, to identify adjacent angles, check for a common vertex and a shared side. If both are present, you have a pair of adjacent angles!