Adyacent angles are the ones that have a common side and a common vertex (corner point), while they don't overlap.
3. In this case, ABD and DBC share the side DB (or BD) and the vertex of each is in point B (corner point), so they are adyacent.
4. In this case, they have a common side, but they don't share a corner point, so they are not adyacent.
5. They share the side QM and also share the corner point Q, so they are adyacent.
