Answer:
x=29°
Explanation:
The sign above means congruent meaning the shapes are of the same shape and sizes.
The triangles are oppositely congruent meaning angle D= angle A and angle E= angle B.
So if C is 48 and D is 74, 48+74= 122. 180-122=58
Angle E is 58. According to the second statement above angle A will then be 74 and C will still be 48
74+48+2x= 180
2x=58
x=58/2 = 29°