1. **Problem 7:** Classify the angle pair 1 and 2 formed by two intersecting diagonal lines forming an X. 2. When two lines intersect, the opposite (vertical) angles are equal. 3. Adjacent angles share a common side and vertex. 4. Complementary angles sum to 90 degrees. 5. Supplementary angles sum to 180 degrees. 6. Congruent angles have equal measures. 7. In problem 7, angles 1 and 2 are opposite angles formed by intersecting lines, so they are **Vertical Angles** and **Congruent Angles**. 8. They are not adjacent because they do not share a common side. 9. They are not complementary or supplementary because vertical angles are equal, not necessarily summing to 90 or 180 degrees. 10. **Problem 8:** Classify the angle pair 1 and 2 formed by a horizontal line crossed by a diagonal line with a vertical ray upward and a right-angle square between vertical and right horizontal rays. 11. Angle 1 is to the left of the vertex, angle 2 is below it. 12. Angles 1 and 2 share a common side and vertex, so they are **Adjacent Angles**. 13. The right-angle square indicates a 90-degree angle, so angles 1 and 2 together form a right angle. 14. Since the sum of angles 1 and 2 is 90 degrees, they are **Complementary Angles**. 15. They are not vertical angles because they are not opposite angles formed by intersecting lines. 16. They are not supplementary because their sum is 90, not 180. 17. They are not congruent unless both are 45 degrees, which is not indicated. **Final answers:** - Problem 7: Vertical Angles, Congruent Angles - Problem 8: Adjacent Angles, Complementary Angles