The distance between 2 cities is 180 km. The distance was covered by a car at 50 kph, by a bus at 45 kph, by a truck at 40 kph, and by a bicycle at 25 kph. How long did each take to travel the entire distance? Are speed and time directly or inversely proportional? What is the constant of variation? NEED HELP ASAP

Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.