What is the answer to this question

If lmn=xyz, which congruences are true by cpctc? check all that apply

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!