Answer:
it's answer is D 57°
Step-by-step explanation:
As it is Given that AB // CD so
< x = 57°
<O = <x = 57° < Being alternate angles >
D.) 57
x=o
in other words the two angles are equal
1400 ÷ 20 = 70
~Hope this helps!
6s
D. 13
x = 5
2 x 5 + 3 = 13
5 + 8 = 13
meaning the side length has to be 13, also.