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Theorem 10.12 : If the sum of a pair of ...

Theorem 10.12 : If the sum of a pair of opposite angles of a quadrilateral is 180º, the quadrilateral is cyclic.

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If the sum of any pair of opposite angles of a quadrilateral is 180^@ ; then the quadrilateral is cyclic.

If the sum of any pair of opposite angles of a quadrilateral is 180^(@) ; then the quadrilateral is cyclic.

If the sum of the pairs of opposite angles of a quadrilateral is 180^@ , then the quadrilateral is

Theorem 10.11 : The sum of either pair of opposite angles of a cyclic quadrilateral is 180º.

Theorem 10.11 : The sum of either pair of opposite angles of a cyclic quadrilateral is 180º.

Sum of opposite angles in a cyclic quadrilateral is …………

Sum of all the interior angles of a quadrilateral is 180^(@) ?.

Theorem 8.3 : If each pair of opposite sides of a quadrilateral is equal, then it is a parallelogram.

Theorem 8.3 : If each pair of opposite sides of a quadrilateral is equal, then it is a parallelogram.