Answer:
x = 60°; y = 120°
Explanation:
The sum of all the interior angles is 180. Thus, we subtract the sum of the angles we're already given from 180 to find m ∠x:
![180-(33+87)=x\\180-120=x\\60=x](https://img.qammunity.org/2023/formulas/mathematics/high-school/gurc33oxqgznf51dhkt5dq2dgv381qcr61.png)
Angles x and y are supplementary angles, which means that their sum is 180.
Thus, we can find y by subtracting x from 180:
![180-60=y\\120=y](https://img.qammunity.org/2023/formulas/mathematics/high-school/h5890yohhlzvu2c4z8p4xjocgri8i91ooa.png)