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Math Help - cyclic quad. problem help please

  1. #1
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    cyclic quad. problem help please

    prove that the perpendicular bisectors of the sides of a cyclic quad. are concurrent.
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  2. #2
    MHF Contributor red_dog's Avatar
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    A perpendicular bisector of one side of the cyclic quadrilater passes through the center of the circle. So, all the bisectors passe through the center.
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  3. #3
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    Quote Originally Posted by red_dog View Post
    A perpendicular bisector of one side of the cyclic quadrilater passes through the center of the circle. So, all the bisectors passe through the center.
    how 2 prove that the perpendicular bisector passes through the centre?
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