Answer:
28
Step-by-step explanation:
Triangle on the right id dilated with scale factor 2 ( the sides of the other triangle are double (17-34 8-16 15-30
Dilations preserve angle measurement
C=90 + B=62=152
All triangles sum up to 180
180-152=28
Angle A=28
Angle A is corresponding with angle D
So angle D is also 28
