Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram?
a. prove that all sides are congruent and have slopes that are opposite reciprocals
b. prove that segments ad and ab are congruent and parallel
c. prove that opposite sides are congruent and have equal slopes
d. prove that segments bc and cd are congruent and parallel

the mean and mad

step-by-step explanation:

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

50.6

step-by-step explanation:

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