I needed help pls help me

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Find the ratios of the corresponding sides

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units