Please help!! Thank you!

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

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

What value of x is in the solution set of 4x – 12 s 16 + 8x?