Chapter 9, Lesson 5


9-5.A recognize congruent angles
For each description, tell whether angle 1 and angle 2 are necessarily congruent.
a.
angle 1 and angle 2 are supplementary.
b. angle 1 and angle 2 are vertical angles.
c. angle 1 and angle 2 are alternate interior angles formed by two lines and a transversal.