Question

which angle is vertical to ∠4? 4 3 5 2 1

Explanation:

Step1: Recall vertical - angle definition

Vertical angles are formed when two lines intersect. They are non - adjacent angles opposite each other.

Step2: Identify vertical angle to ∠4

In the given figure, when two lines intersect, ∠4 and ∠2 are non - adjacent and opposite each other.

Answer:

∠2