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      Question

      A,B, C are three points such that AB = 9 cm, BC = 11 cm

      and AC = 20 cm. The number of circles passing through points A,B,C is:
      A 2 Correct Answer Incorrect Answer
      C 1 Correct Answer Incorrect Answer
      D 3 Correct Answer Incorrect Answer

      Solution

      A, B, C three points. AB = 9 cm BC = 11 cm AC = 20 cm Property of formation of triangle is; Sum of any two sides must be greater than the 3rd side. i.e. a + b > c where a, b, c are three sides of the triangle. ∡ AB + BC = AC ∴ No triangle can be formed using the three sides given. ∴ No circle will pass through the points A, B, C.

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