# Examine whether the following points taken in order form a square. (0, - 1), (2, 1), (0, 3) and ( - 2, 1)

Let the given points be A(0, - 1), B(2, 1), C(0, 3) and D( - 2, 1) respecievely.

The distances

The sides AB=BC=CD=AD and the diagonals AC=BD. Therefore the given points form a square.

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