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Hello, dgenerationx2!
You couldn't type the question for us?
Did you make a sketch?Quadrilateral $\displaystyle ABCD$ has vertices with coordinates:
. . $\displaystyle A(1,-4),\;\;B(-3,0),\;\;C(1,4)$
Determine the coordinates of $\displaystyle D$ for which $\displaystyle ABCD$ is a square.Code:| (1,4) | o C | * * * * * | * B * | * D - - o - - | - - - - - - o - - (-3,0)* | * * | * * * | * * | o A | (1,-4)
You can "eyeball" where $\displaystyle D$ is . . . can't you?