The distance between r and t on the coordinate grid is units. (input whole numbers only.) image of a coordinate grid with point r r located at negative 30, 10 and point t located at 15, 10.

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.