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if the sum of pairs of …

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if the sum of pairs of two of opposite angle of a quadrilateral is 180. then the quadrilateral is cyclic.

    • Posted by Harsh Patel 8 years, 3 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Chandraveer Narayan 8 years, 3 months ago

    Yes,it's a theorem

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