Prove that the points \(A(4, 5)\), \(B(-1, 3)\), \(C(1, -2)\) 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 .