100 points plus brainliest if you can

5. when the same side is part of two different triangles, you can use the property to say that that side is congruent to itself.

6. use a compass and straightedge to construct a line perpendicular to the given line through point p.
remember to leave all of your construction marks. (pic below)

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