Firing a piece of pottery in a kiln takes place at different temperatures for different amounts of time. The graph below shows the temperatures in a kiln while firing a piece of
pottery after the kiln is preheated to 200°F.
1600
(8,1800)
(5,1640)
(2.5,1300)
1200
Temperature (°F)
800
(1.5.900)
(1.700)
400
2
4
6
8
10
N
Time (hours)
During which time interval did the temperature in the kiln show the greatest average rate
of change?
1) 0 to 1 hour
3) 2.5 hours to 5 hours
2) 1 hour to 1.5 hours
4) 5 hours to 8 hours

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.