https://file.aiquickdraw.com/mathbot/file/1727188554024yz5kbb6p.jpg

Let's analyze the image step-by-step to identify the angle pairs and their corresponding relationships. 

### Given Angles:
- **Pair 1:** Angles 2 and 3
- **Pair 2:** Angles 1 and 4

### Checking each pair:

1. **Angles 2 and 3:**
   - These angles are on opposite sides of the transversal and are located inside the parallel lines. Therefore, they are **Alternate Interior Angles**.
   
2. **Angles 1 and 4:**
   - These angles are on opposite sides of the transversal and outside the parallel lines. Therefore, they are **Alternate Exterior Angles**.

### Answer Choices Analysis:

- **A: Vertical**: This does not apply as vertical angles are non-adjacent and formed by two intersecting lines.
- **B: Complementary**: Not applicable, since complementary angles add up to 90 degrees, and these are not guaranteed to do so.
- **C: Alternate Interior**: Matches with angles 2 and 3.
- **D: Alternate Exterior**: Matches with angles 1 and 4.
- **E: Same-Side Interior**: Incorrect because they are on opposite sides.
- **F: Acute Angle Pairs**: No information suggests they are all acute.
- **G: Corresponding**: Incorrect, as corresponding angles are in the same position relative to the parallel lines.
- **H: Same-Side Exterior**: Not applicable.
- **I: Supplementary**: No confirmation that they sum to 180 degrees directly from the image.

### Therefore, the correct code is:
**CD**

Would you like more detailed explanations or have any questions?

### Related Questions:

1. What are other examples of alternate interior angles in a different figure?
2. Can complementary and supplementary angles be identified easily in parallel line situations?
3. How can you determine if angles are corresponding in other diagrams?
4. Are vertical angles always equal in every scenario?
5. Why do alternate exterior angles always have the same measure?

**Tip:** When dealing with parallel lines cut by a transversal, always check which side of the transversal the angles are on to classify them correctly.

Can you name the angle pairs and type the correct code? Please remember to type in ALL CAPS with no spaces.

Learn how to identify angle pairs formed by a transversal cutting through parallel lines. This problem includes alternate interior and alternate exterior angles. Suitable for students in Grades 6-8.

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