What 2 sides need to be congruent in order to prove the 2 triangles are congruent by HL? PLEASE GIVE ANSWER 10 POINTS

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?