Question

when lines intersect, they form congruent angles and supplementary angles. without using a protractor, can you tell which angle is congruent to ∠1? ∠2 ∠3 ∠4

Explanation:

Step1: Recall vertical - angle property

When two lines intersect, vertical angles are congruent.

Step2: Identify vertical angle of ∠1

∠1 and ∠3 are vertical angles.

Answer:

∠3