There are 8 bags of rice looking alike, 7 of which have equal weight and one is slightly heavier. the weighing balance is of unlimited capacity. using this balance, the minimum number of weighings required to identify the heavier bag is
a) 2
b) 3
c) 4
d) 8

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