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Establish that the points \(A(0, 3)\), \(B(-3, 3)\), \(C(-3, -8)\) are the vertices of a right angled triangle.
 
\(AB\) \(=\) i
 
\(BC\) \(=\) i
 
\(AC\) \(=\) i
 
\(AB^2 + BC^2 =\) i+i=i 
 
The given points are .