 Hello and welcome to the session. In this session we discussed the following question which says define an isosceles trapezium also draw an isosceles trapezium are the diagonals of an isosceles trapezium always equal. Before we move on to the solution first let's define what is a trapezium. Trapezium is a quadrilateral having one and only one of parallel sites. This is the key idea that we use for this question. Now we move on to the solution. So let's define isosceles trapezium a trapezium said to be an isosceles trapezium if its non-parallel sites are equal. Consider this trapezium PQRS it is an isosceles trapezium in which we have PQ parallel to RS and the non-parallel sites that is PS and RQ are equal. That is we have PS is equal to RQ. The diagonals of an isosceles trapezium always equal. For this isosceles trapezium PQRS we have its diagonals PR and SQ and they are equal that is PR is equal to SQ. So this completes our session. Hope you have understood the solution of this question.