Naomi left from an elevation of 7400 ft at 7 a. m. and hike to elevation of 9800 ft by 11 a. m. what was her rate of change in altitude

9800 - 7400 = 2400 feet

11 am - 7 am = 4 hours

2400 / 4 = 600 feet per hour

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.