Answer: ∠x = 75°
Step-by-step explanation:
We know that a triangle's angles add up to 180°. See the triangle I have highlighted in the attachment. We know two of the angles for this triangle, so we can find the 3rd.
180° - 36° - 39° = 105°
Now, since a line is equal to 180°, we can find ∠x to answer our question.
180° - 105° = 75°
