 Hello and welcome to the session. In this session we discussed the following question that says PQRS is a quadrilateral in which QR is equal to RS, OM is the right path sector of PQ and OM is the right path sector of PS, prove that OR bisects under QRS. Before we move on to the solution, let's discuss the work is shown to be used in the solution. According to this we have the work is of a point PQ distance is the right path sector that we use in this question. Now we move on to the solution. We are given this quadrilateral PQRS in which QR is equal to RS plus PQ and OM is the right path sector of PS. The quadrilateral PQRS if QR is equal to the side RS of the quadrilateral then the right path sector is the right path sector of PQ and we are supposed to prove that this OR is the right path sector, the right path sector, we have the velocus of a point equidistant from two sectors of the straight line joining the fixed point is on the right path sector the equidistance from the points P and S that is OP is equal to OS, let this be result 1. Now next we have OM is the right path sector on the right path sector of PQ and would be equidistant from the points P and Q that is OP would be equal to OQ, let this be result this would be equal to OQ, that is this OS is equal to OQ, let this be result 3, O is equal to OS is the common side to both the triangles then QR is equal to given to us and Plex is equal to from the result 3, O we say that the triangle on to the triangle ROQ is equal to the angle ORQ corresponding parts of the congruent triangle so they are on this names and those are equal. This completes the session hope you understood the solution of this question.