Five marks exercise problems VIII — task. Mathematics State Board, Class 9.

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Show that the following points taken in order form an isosceles triangle.

\(A(6, -4)\), \(B(-2, -4)\), \(C(2, 10)\)

Proof:

AB = i

BC = i \sqrt{i}

CA = i \sqrt{i}

and

Thus, the triangle \(ABC\) is an isosceles triangle.

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22. Five marks exercise problems VIII