Prove that the quadrilateral formed (if possible) by the internal angle bisectors of any quadrilateral is cyclic

Answer any one question : Prove that the quadrilateral foemed by the internal bisectors of the four angles of a quadrilateral is cyclic.

The quadrilateral formed by angle bisectors of a cyclic quadrilateral is also cyclic.

The quadrilateral formed by angle bisectors of a cyclic quadrilateral is also cyclic.

The quadrilateral formed by angle bisectors of a cyclic quadrilateral is also cyclic.

The quadrilateral formed by angle bisectors of a cyclic quadrilateral is also cyclic.

Prove that the quadrilateral formed by joining the mid-points successively of any quadrilateral is also a parallelogram. Also, prove that the perimeter of that parallelogram is equal to the sum of that quadrilateral's diagonals.

If a quadrilateral is cyclic then it is a

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