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[" 7.The points "(a,b),(c,d)," and "((kc...

[" 7.The points "(a,b),(c,d)," and "((kc+la)/(k+l),(kd+1b)/(k+l))" are "],[" a.Vertices of an equilateral triangle "],[" b.Vertices of an isosceles triangle "],[" c.Vertices of a right-angled triangle "],[" d.Collinear "]

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