[" In "Delta ABC,a^(2)+b^(2)+c^(2)=ac+ab...

[" In "Delta ABC,a^(2)+b^(2)+c^(2)=ac+ab sqrt(3)," then the "],[" triangle is "],[[" (A) equilateral "," (B) isosceles "],[" (C) right angled "," (D) none of these "]]

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