Question

which angles are adjacent to each other?
∠2 and ∠5
∠1 and ∠3
∠4 and ∠2
∠1 and ∠2

Explanation:

Adjacent angles share a common vertex and a common side, with no overlapping interior.

• $\angle2$ and $\angle5$: No common side.
• $\angle1$ and $\angle3$: No common side.
• $\angle4$ and $\angle2$: No common side.
• $\angle1$ and $\angle2$: Share a vertex and a common side, no overlap.

Answer:

$\angle1$ and $\angle2$