 Hello and welcome to the session. In this session we will discuss the area theorem. According to this theorem we have the area of a parallelogram is the product of and we correspond to altitude. We are given this parallelogram PQ. We have to show that the area of this parallelogram is the product of any of its altitude. That is we are supposed to prove that area of the parallelogram altitude which is PN. So PQ into gives the area of the parallelogram PQRS. Now first we will do some construction. We complete the rectangle MQ. So this is the rectangle PNMQ. We start with the proof that we observe that the parallel of MQ same base PQ is between the same parallel. That the area of the parallelogram is equal to the area rectangle MQ rectangle is equal to length into breadth. So area of the parallel PNMQ would be equal to its length into its breadth that is PQ the parallel is equal to PQ into PN. This is what we were supposed to prove that the area of the parallelogram is the product of any of its height and the corresponding altitude. We have proved the stated theory session hope you have understood the area theorem.