SOLUTION: the vertices of quadrilateral abcd are a (-2,1), b(4,-2), c(8,2), d(2,5). is ABCD a aparallelogram?

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Question 820329: the vertices of quadrilateral abcd are a (-2,1), b(4,-2), c(8,2), d(2,5). is ABCD a aparallelogram?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

the vertices of quadrilateral abcd are a (-2,1), b(4,-2), c(8,2), d(2,5). 

%281-%28-2%29%29%2F%28-2-4%29+=+%282-5%29%2F%288-2%29+=+3%2F6 ab and cd are parallel

%28-2-2%29%2F%288-4%29+=+%285-1%29%2F%282-%28-2%29%29+=+-4%2F4 bc and ad are parallel

abcd is a parallelogram