Asymphony orchestra is arranged in a semicircle around the conductor. the rows are about 3 feet apart, with the first row about 6 feet from the conductor. a mid-sized orchestra has about 6 rows of chairs. what is the approximate delay between the instant when a play at the 6th row start a note and when the conductor hears the note?

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem