Write an equation of the line that passes through (0,−5) and (−5,−5)

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

Math question.. plz me .. best answer all

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?