I need to find x. But I don’t know if I am doing it correctly. Does anyone know the correct answer? Pls help . Thanks!

I'm so close to finishing all these.

Plz me plz i will give a brain just plz

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2