Answer:
11
Step-by-step explanation:
5x + 5 = 4x + 16 ( being alternate angles)
5x - 4x = 16 - 5
x = 11
Hope it will help :)
Angle B is also 54° because they are vertically opposite angles.
Now, you do 54+54=108 and then 360-108=252. (The angles should always add up to 360, so remember that) Because angles C and D are also vertically corresponding angles, they add up to 252, and each measure 126°
