What is the solution set of the equation (x - 2)(x - a) = 0?
(1) -2 and a
(3) 2 and a
(2) -2 and -a
(4) 2 and a

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.