SOLUTION: I have four coordinates, and i want to know how to figure out if the four points make a parallelogram?

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Question 99261This question is from textbook Advanced Mathematical Concepts
: I have four coordinates, and i want to know how to figure out if the four points make a parallelogram? This question is from textbook Advanced Mathematical Concepts

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Plot the four points and label them A,B,C,D.
If AB is opposite CD show that their slopes and their lengths are the same.
If BD and AC are opposite show the same about their slopes and lengths.
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Cheers,
Stan H.