Acarpenter is making a brace for a chair. to do so she intersects two pieces of wood to make two sets
of vertical angles. the obtuse angles formed are each 145°. what is the measurement of each acute angle
formed?
a. 180°
b. 90°
c. 35°
d. 25°

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