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[" If in a "Delta ABC,8R^(2)=a^(2)+b^(2)...

[" If in a "Delta ABC,8R^(2)=a^(2)+b^(2)+c^(2)," then the triangle "],[ABC" is:- "],[[(a)" right angled "," (b) isosceles "],[" (c) equilateral "," (d) none of these "]]

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