Please awnser and make sure it is right I will brainlist

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

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