If angles are marked congruent and segments of equal measures extend from the point of intersection to the sides of a triangle you are dealing with

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

Finding tbe values of the variables in each kite

What is the slope of (0,32) and (100,212)