 Hello and welcome to the session. In this session we discussed the calling question that says construct a triangle PQR in which QR is equal to 6 centimeters, angle Q is equal to 60 degrees and angle P is equal to 75 degrees. Before we move on to the solution let's recall one fact which says that the sum of the angles of a triangle is 180 degrees. This is the key idea to be used in this question. Let's move on to the solution now. First let's draw the rough sketch for this triangle PQR. This is the triangle PQR in which we are giving QR is of measure 6 centimeters, angle Q is of measure 60 degrees and angle P is of measure 75 degrees. Now we will do this construction step by step. Now first of all we are given angle P and angle Q but we are not given angle R. We can easily find out angle R by the angles and property of triangle that we have stated in the key idea. So we consider the triangle PQR in this we have angle P plus angle Q plus angle R is equal to 180 degrees that is 75 degrees plus 60 degrees plus angle R is equal to 180 degrees or we can say angle R is equal to 180 degrees minus 135 degrees so we get angle R is equal to 45 degrees. So we have got the measure of the third angle angle R as 45 degrees. So now let's start with the construction. Our first step would be draw a line segment QR equal to 6 centimeters. This line segment QR is of measure 6 centimeters. Now that we have angle Q is of measure 60 degrees so in the next step we construct angle XQR equal to 60 degrees. This angle XQR is of measure 60 degrees then as you can see in the last sketch we have found out angle R as 45 degrees. So our next step would be construct angle YRQ of measure 45 degrees. So this angle YRQ is of measure 45 degrees. Now let QX and RY intersect at P that is at this point of intersection B point P. So we have triangle PQR is the required triangle in which we have QR is of measure 6 centimeters, angle Q is of measure 60 degrees, angle P is of measure 75 degrees and angle R is of measure 45 degrees. So this completes the session. Hope you have understood the solution for this question.