# If ABCD is a parallelogram with A (5,4), B (-1,-2), C (8,-2). How do you find the coordinates of D?

##### 1 Answer

Sep 22, 2016

Thus, the fourth vertex of the prlgm. can be

#### Explanation:

Let the fourth vertex of the prlgm. be

Now, there are

We know that the diagonals of a prlgm. bisect each other.

#:. D(x,y)=D(-4,4) in this case.

Proceeding as above, we have, In this case,

In this case,

Thus, the fourth vertex of the prlgm. can be

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