If the exterior angle of a quadrilateral formed by producing one of its sides is equal to the interior opposite angle, prove that the quadrilateral is cyclic.

Interior and exterior of a quadrilateral

Prove that if the external angle obtained by producing the side of a quadrilateral is equal to the internally oppoiste angle, then the quadrilatera wil be cyclic.

If one side of a cyclic quadrilateral is produced, then the exterior angle is equal to the interior opposite angle.

If one side of a cyclic quadrilateral is produced; then the exterior angle is equal to the interior opposite angle.

If one side of a cyclic quadrilateral is produced,then the exterior angle is equal to the interior opposite angle.

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

If a side of the cyclic quadrlateral is produced ; then the external angle is equal to the interior opposite angles.

The opposite angles of a cyclic quadrilateral are ……………

An exterior angle of a triangle is equal to the sum of the two interior opposite angles.