Question

1. name all the angles that are congruent to angle 1.

Explanation:

Step1: Identify vertical angle to ∠1

Vertical angles are congruent. The vertical angle of ∠1 is ∠3.

Step2: Identify corresponding angles to ∠1

Corresponding angles (for parallel lines cut by transversal) are congruent. The corresponding angle of ∠1 is ∠5.

Step3: Identify vertical angle to ∠5

Vertical angles are congruent. The vertical angle of ∠5 is ∠7.

Answer:

∠3, ∠5, ∠7