Question 486706
Define angle 1 = x and angle 2 = y, with x = (y/2) - 9. The sum of x and y is 180, so


*[tex \LARGE (\frac{y}{2} - 9) + y = 180]


*[tex \LARGE \frac{3y}{2} - 9 = 180 \Rightarrow \frac{3y}{2} = 189 \Rightarrow y = 126]


Hence x = angle 1 = 54.