Answer:
111°
Explanation:
Triangle at right:
2 congruent sides and 2 congruent opposite angles at the top.
The opposite angles (at the top) to the congruent sides, both measure 66°.
The angle at the bottom measures 180 - 66 - 66 = 48.
The triangle to the left has 1 angle which is a complement to the 48° angle (at the bottom). The bottom angle of the triangle at left measures 90 - 48 = 42. Because of the 2 congruent sides the triangle at left has 2 congruent angles at the top.
42 + y + y = 180
y = 69
The interior angle of the left triangle near x measures 69°.
x is a supplement of the 69° angle.
x = 180 - 69
x = 111