Question

name the two pairs of vertical angles in the figure. ∠1 and? ∠2 and?

Explanation:

Step1: Recall the definition of vertical angles

Vertical angles are pairs of opposite angles formed by two intersecting lines.

Step2: Identify the pairs in the figure

In the given figure, when two lines intersect, $\angle1$ and $\angle3$ are opposite each other, and $\angle2$ and $\angle4$ are opposite each other.

Answer:

$\angle1$ and $\angle3$, $\angle2$ and $\angle4$