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8-14.

What is the measure of in the diagram at right? List any subproblems that were necessary to solve this problem. Homework Help ✎

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.

figure CPM