Question

which angles are adjacent to each other? ∠3 and ∠2 ∠1 and ∠3 ∠2 and ∠10 ∠12 and ∠3

Explanation:

Step1: Recall adjacent - angle definition

Adjacent angles share a common side and a common vertex, and have no common interior points.

Step2: Analyze each option

• For $\angle3$ and $\angle2$: They share a common side and a common vertex, and no common - interior points.
• For $\angle1$ and $\angle3$: They do not share a common side.
• For $\angle2$ and $\angle10$: They do not share a common side or a common vertex.
• For $\angle12$ and $\angle3$: They do not share a common side or a common vertex.

Answer:

$\angle3$ and $\angle2$