A.
It shows angles on opposing sides and they are on the inside
The greatest common factor of 12 and 15 is 3 because it is the greatest number divisible by both 12 and 15.
The line crossing the two parallel lines forms an allied angle
So using the theory “allied angles add up to 180 degrees” we can find x
76 + x =180
x= 180-76
x=104 (Option B)
I hope this helps you
width = 1/5 .length
length =5.width
Perimeter =2 (w+l)
168=2. (w+5w)
84=6w
w=14
l=5.14=70