Answer:
See explanation
Step-by-step explanation:
Part A.
1. Angle 1 and angle with degree measure of 48° are vertical angles (opposite when two lines intersect). Vertical angles are congruent, so angle 1 has measure of 48°.
2. Angles 1 and 2 are same-side interior angles, they add up to 180°, so
m∠2=180°-m∠1=180°-48°=132°
3. Angles 2 and 3 are alternate exterior angles, they are congruent, so
m∠3=132°
Part B. If Elm Street is perpendicular to Main Street and is also perpendicular to Oak Street, then Main street and Oak Street are parallel.
