In this example problem, examine the given information, mark the given information on the diagram as in the first tip, and decide if congruent triangles will help you solve this problem.
This problem does not ask you to prove the triangles are congruent. This, however, does not mean that you should not "look" for congruent triangles in this problem. Remember that once two triangles are congruent, their "left-over" corresponding pieces are also congruent. If you can prove these two triangles are congruent, you will be able to prove that the segments you need are also congruent since they will be "left-over" corresponding pieces.
Which of the congruent triangle methods
do you think is used in this example?