Answer:
31°
Explanation:
So we can tell one of the triangles is an isosceles because the two dashes on the sides mean the sides are of equal length. We can calculate the top angle of this triangle by:
90 - 28 = 62
Now we can calculate the other two angles, which are the same:
180 - 62 = 118
118 ÷ 2 = 59
So now we know two angles of the big triangle we can calculate angle x:
180 - 59 - 90 = 31
So x = 31°
Hope this helps!