### Home > CCG > Chapter 10 > Lesson 10.2.2 > Problem 10-88

10-88.

Examine the diagram below. Use the given geometric relationships to solve for . Be sure to justify your work by stating the geometric relationship and applicable theorem. Homework Help ✎

Use the Triangle Angle Sum Theorem to find

.Vertical angles are equal. Use this information to find

.

When solving for, remember that parallel lines have equal corresponding angles.