### Home > CC4 > Chapter 8 > Lesson 8.2.3 > Problem 8-122

8-122.

Use angle relationships in the diagrams below to solve for

*x*, if possible. If it is not possible, state how you know. If it is possible, justify your solution by stating which geometric relationships you use. Homework Help ✎a.

b.

c.

The angles in a triangle sum to 180º.

So, (3*x*−2º) + (2*x* + 3º) + (*x* + 8º) = 180º.

How can you use the parallel lines to find an angle within the triangle?