show that the points (7,9), (3,-7),(-3,3) are the vertices of an isosceles triangle
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A (7,9);B(3,-7);C(-3,3). now,the points would be the vertices of a right angled triangle.. if .. any one side is equal to the root of sum of other two sides... ... therefore,A,B,C are the vertices of a Right angled triangle.
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