# Math Help - Quadrilateral Question

in attachments

2. As far as I can see, the only way to get something like a square would be to plot a point at (5,0)

3. Hello, dgenerationx2!

You couldn't type the question for us?

Quadrilateral $ABCD$ has vertices with coordinates:
. . $A(1,-4),\;\;B(-3,0),\;\;C(1,4)$

Determine the coordinates of $D$ for which $ABCD$ is a square.
Did you make a sketch?
Code:
              | (1,4)
|   o C
| *   *
*       *
* |         *
B *   |           *  D
- - o - - | - - - - - - o - -
(-3,0)*   |           *
* |         *
*       *
| *   *
|   o A
| (1,-4)

You can "eyeball" where $D$ is . . . can't you?