Question

Show that points (0, -1), (2, 1), (0, 3) and (-2, 1) are vertices of a square

Answer 1

let A(0,-1),B(2,1),C(0,3)&D(-2,1). now using distant formula , find AB , BC ,CD and AD. If AB=BC=CD=DA , then find it's diagonal AC and BD . If AC=BD , then it is a square .

Answer 2

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