Line p intersects lines a and b. a b. By which theorem is ∠1 ≅ ∠8?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie