Find the area of the shaded region

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

Acompany sells crushed rock in 16-pound bags each bag contains a mixture of quarts and marble

Liam and evan are mixing paint. liam uses 2 quarts of yellow paint and adds 314 jars of blue paint. evan uses 12 quart of yellow paint and adds 512 jars of red paint. they end up with the same volume of paint.