You didn't post a question.
I'm pretty sure it's an infinite number of lines
Answer:
The answer is 10.6 (I'm sorry if it's wrong)
Step-by-step explanation:
found out what D and B is (they both are 4 I think) then add 10 with 8 then divide 120 with 18 which is 6.6 then add what D is and then I got 10.6