To solve the problem in the image, we need to identify which angle is adjacent to ∠CGB.

Key points:

• ∠CGB refers to the angle formed between lines $CG$ and $GB$, which is angle 2 in the diagram.
• Adjacent angles share a common side and vertex but do not overlap.

For ∠CGB (angle 2):

• Its adjacent angle will share the vertex $G$ and the line $GB$, which is angle 3.

Thus, the angle adjacent to ∠CGB is angle 3.

Would you like a further breakdown or have more questions?

Related Questions:

1. What are vertical angles, and which angles in this diagram are vertical?
2. Which angle is complementary to ∠CGB?
3. Can two adjacent angles be supplementary? Provide examples from this diagram.
4. What is the sum of all angles around point $G$?
5. Which angles are congruent based on the diagram?

Tip: Adjacent angles often form linear pairs, meaning their sum is 180°.