A square has vertices at the points A(3,-3), B(-3,-3), C(-3,3), and D(3,3). What is the area of this square?

Question

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Answer 1

Although this question is clear without a sketch, if you are having trouble with it, you should make a sketch.

This is a square centered at the origin with a side of 6.

The absolute value of the area is 36.

Of course, if you consider area below the x-axis as negative, the algebraic area is 0.