### Home > CCG > Chapter 9 > Lesson 9.1.5 > Problem9-62

9-62.

Examine the information provided in each diagram below. Decide if each figure is possible or not. If the figure is not possible, explain why.

1. What angle measure is supplementary to $120^\circ$?
Would this also satisfy the Triangle Angle Sum Theorem?

1. How are the same-side interior angles in a parallelogram related?

1. Are the vertical angles equal?