Show that the following points are the vertices of a square: (i) \( A(3,2), B(0,5), C(-3,2) \) a...

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Show that the following points are the vertices of a square:
(i) \( A(3,2), B(0,5), C(-3,2) \) and \( D(0,-1) \)
(ii) \( A(6,2), B(2,1), C(1,5) \) and \( D(5,6) \)
(iii) \( A(0,-2), B(3,1), C(0,4) \) and \( D(-3,1) \)
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