A
x=75°
B
We know that ∠EFG=∠ABF because they are corresponding angles.
We also know that ∠x+∠ABF=180, because angles along a straight line always equal 180:
x+105=180
x=75°
Answer:
4 12
3 18
5 20
7 42
5 15
Step-by-step explanation:
all of the above form a proportion