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Theorem :- The sum of either pair of opposite angles of a cyclic quadrilateral is 180º

Theorem :- If the sum of a pair of opposite angles of a quadrilateral is 180º, the quadrilateral is cyclic

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Theorem :- The sum of either pair of opposite angles of a cyclic quadrilateral is 180º

Theorem :- If the sum of a pair of opposite angles of a quadrilateral is 180º, the quadrilateral is cyclic

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