A deep-sea diver is in search of coral reefs. He finds a beautiful one at an elevation of feet. While taking pictures of the reef, he catches sight of a manta ray. He swims up feet to check it out. What is the diver's new elevation? A. -146 feet B. feet C. feet D. 146 feet

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.