Show that a triangle ABC, with vertices A(2;3), B(5;7) and C(-2;6), is an isosceles triangle.
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Step-by-step explanation:
AB= √((2-5)²+(3-7)²)= 5
AC= √((-2-2)²+(6-3)²)= 5
AC= AB
Therefore, ∆ABC is an isosceles triangle..
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