The 3 inside angles need to equal 180.
Subtract E from 180 to find the sum of the other two angles:
180 - 104 = 76
Now because EF ≅ DE , angle D and F would be the same so divide 76 by 2
Angle D = 38
C=2πr r radius it would be right
That would be angle 2. It is on the opposite of angle 7 and it is inside the two parallel lines
Hope this helped!
~Just a girl in love with Shawn Mendes
This is all I could do for now. Hope It helps!
