Aladder 13 feet long is leaning against the wall of a house. the top of the ladder is sliding down the wall at a rate of 2.4 ft/sec. find the rate at which the angle between the ladder and the ground is changing when the top of the ladder is 12 feet above the ground. be sure to draw and label a picture

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.