If you could help I would really appreciate it, but if not that’s fine. Thank you.

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

Complete the steps to find 4.830 ÷ 5

Let x = a + bi and y = c + di and z = f + gi. which statements are true?