 Hi, and welcome to the session. I am Leha and today I am going to help you with the following question. The question says, name the quadrilaterals whose diagonals are equal. So let's see its solution. Consider a rectangle. Here A, B, C, D is a rectangle and recall the properties of a rectangle. A rectangle is a parallelogram whose all the angles are right angles and the diagonals are equal. So by its definition we can say that the diagonals of a rectangle are equal. So the quadrilaterals diagonals are equal. First one is a rectangle. Now consider a square. Now we know that a square is a quadrilateral which satisfies all the properties of a rectangle. Thus we can say that the diagonals of a square are also equal. So the second quadrilateral whose diagonals are equal are square. Therefore our final solution for this question is a rectangle and a square. With this we finish this session. Hope you must have enjoyed it. Goodbye and take care.