7. Given that line n is perpendicular to line m, what are the measures of angles 1, 2, 3, and 4.
nim
90°, 90°, 180°, 180°
180°, 90°, 180°, 90°
0
45°, 45°, 45°, 45°
90°, 90°, 90°, 90°

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