[98 points to anyone who answers all] use the diagram below to answer the following questions.

given a || b

1. the value of x is
2. the measure of ∠ 1 is
3. the measure of ∠ 2 is
4. the measure of ∠ 3 is
5. the measure of ∠ 4 is
6. the measure of ∠ 5 is
7. the measure of ∠ 6 is
8. the measure of ∠ 7 is
9. the measure of ∠ 8 is
10. angles 2 and 3 are angles

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