Answer:
x = 8.5
Explanation:
Because of the geometric property of triangles... we know that the two triangles are congruent.
Angle A = Angle E
and Angle B = Angle D
Therefore... If we find the angle of B, we also find the angle of D (because they're the same)
Since the sum of interior angles of a triangle is 180°... just subtract the two angles already given (50° + 45° = 95°) from the total 180° to find the last angle.
When you do that... you find that Angle D = 85°
Divide 85 by 10 to solve for x
x = 8.5