Question

1. classify ∠1 and ∠2 using all relationships that apply. adjacent vertical complementary supplementary linear pair

Explanation:

• Adjacent: Adjacent angles share a common side and a common vertex. $\angle1$ and $\angle2$ do not share a common side, so they are not adjacent.
• Vertical: Vertical angles are opposite angles formed by the intersection of two lines. $\angle1$ and $\angle2$ are opposite angles formed by the intersection of two lines, so they are vertical.
• Complementary: Complementary angles add up to $90^{\circ}$. There is no indication that $\angle1+\angle2 = 90^{\circ}$, so they are not complementary.
• Supplementary: Supplementary angles add up to $180^{\circ}$. There is no indication that $\angle1+\angle2=180^{\circ}$, so they are not supplementary.
• Linear Pair: A linear pair of angles is adjacent and supplementary. Since $\angle1$ and $\angle2$ are not adjacent, they are not a linear pair.

Answer:

Vertical