Find x and the measure of x= And m

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

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

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)