In
Final Answer: The measure of
Step 1 :The problem involves a triangle and an extended line, forming an exterior angle. The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles. In this case,
Step 2 :We can set up an equation using this relationship:
Step 3 :Solving this equation gives us the value of
Step 4 :Substituting
Step 5 :Final Answer: The measure of