Determine the volume for three-dimensional figure shown below

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 are the cordinates for point a?

Apainting measures 2.4 feet from left to right. it's hung in the center of a rectangular wall measuring 20 feet from left to right. what is the distance between the right edge of the painting at the right edge of the wall?