Yes there is. i do not know the theorem but I know it's rule. If 2 lines intersect the same line, and they have an equal angle in the same quadrant then they are parallel. This is because their all of their angles would be equal and they are basically the same line but shifted over
Answer:
I'm pretty sure it b
Step-by-step explanation:
I think its b
11 is the answer.
10+10=20
20-9=11
11+9=20
11
it would be 7 lolz dheisns