### Home > INT3 > Chapter 8 > Lesson 8.1.1 > Problem 8-14

8-14.

What is the measure of

Recall the angle relationship between vertical angles.

Can you isolate one variable on one side of the equation?

If lines and

*are parallel, then what is true about angles*

*and*

*?*

Solve the system:

Once you know the values of and

*, determine the angles in the triangle.*