Answer:
x = -10
Explanation:
- The little red triangles on the two lines indicates that they are parallel.
- Since the (x + 60)° angle and the 50° lie on opposite sides of the traversal and on the inner side of the parallel lines, they are alternate interior angles.
- Alternate interior angles area congruent which means the measures of the two angles equal each other.
Thus, we can find x by setting (x + 60) equal to 50:
(x + 60 = 50) - 60
x = -10
Thus, x = -10.