1.

If three points A, B,C. Such that AB = \(\sqrt{50}\) cm, BC = \(\sqrt{98}\) cm, AC = \(\sqrt{288}\) cm. Check whether the points A,B,C lie on a straight line?

Answer»

AB = \(\sqrt{50}\) = \(5\sqrt{2}\) cm

BC = \(\sqrt{98}\) = \(7\sqrt{2}\) cm

AC = \(\sqrt{288}\) = \(12\sqrt{2}\) cm

\(5\sqrt{2}+7\sqrt{2}=12\sqrt{2}\)

AB + BC = AC

The three points lie on a straight line.



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