In the given figure ab is parallel to cd and
- in the given figure ab is parallel to cd and a transversal
- in the given figure ab is parallel to cd and diagonals ac and bd intersect at o
- in the given figure ab is parallel to cd and cd is parallel to ef
- in the given figure ab is parallel to cd and o is the midpoint of ad
- in the given figure ab is parallel to cd and o is the centre of the circle
- in the given figure ab is parallel to cd and ef is transversal
