What is the slope of this graph?

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

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?