(7.2 x ten to the third) - (2.2 x ten to the fifth)

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

Which letters from the table represent like terms? a and b b and c a and d b and d

Secant be and cf intersect at point d inside a what is the measure of cde