Factor completely 3a4y3 − 12a3y2 + 6a2y.
3(a4y3 − 4a3y2 + 2a2y)
3a2y(a2y2 − 4ay + 2)
3y(a4y2 − 4a3y + 2a2)
prime

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