I need to get this done please help

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?