AB & CD are two equal chords of a circle with Centre O, which intersect each other at a right angle at point P. If the perpendiculars from the centre to AB and CD meet them at M and N respectively, then MONP is a_______.

AB & CD are two equal chords of a circle with Centre O, which intersec

1.	AB & CD are two equal chords of a circle with Centre O, which intersect each other at a right angle at point P. If the perpendiculars from the centre to AB and CD meet them at M and N respectively, then MONP is a_______.
Answer» AB & CD are two equal chords of a circle with Centre O, which intersect each other at a right angle at point P. If the perpendiculars from the centre to AB and CD meet them at M and N respectively, then MONP is a_______.