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 the angles opposite each other when two lines cross.

Step2: Identify the pairs

In the given figure, when two lines intersect, $\angle1$ is opposite to $\angle3$ and $\angle2$ is opposite to $\angle4$.

Answer:

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