In the diagram, the ratios of two pairs of corresponding sides are equal. To prove that angle LMN is congruent to angle XYZ by the SAS similarity theorem, it’s also need to be shown that?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?