 Hello and welcome to the session. In this session we discussed the following question which says, draw a square each of whose side is 4 centimeters, use a pair of compasses and ruler. Let's move on to the solution now. We'll do this construction step by step. So our first step of construction here would be, draw a line segment PQ equal to 4 centimeters since we are given that the side of the square is of measure 4 centimeters. This is the line segment PQ which measures 4 centimeters so we have drawn one side of the square. Now as we know that the square are of measure 90 degrees each. So in the next step we have construct an angle of measure 90 degrees at points P and Q. So at points P and Q we have constructed an angle of 90 degrees that is we have angle XPQ is equal to 90 degrees and angle YQP is equal to 90 degrees. Now that each side of the square is 4 centimeters so in the next step we have with Fc center and radius equal to 4 centimeters draw an arc on the ray XP. So this arc is drawn taking P as the center and radius equal to 4 centimeters such that this arc intersects the ray XP at point so we get P as equal to 4 centimeters with Q as the center and radius equal to 4 centimeters on the ray YQ. So we have drawn this arc which intersects YQ at the point that we have QR equal to 4 centimeters then in the next step where we get RS equal to 4 centimeters is the square equal to 4 centimeters. So that we have obtained the square this complete C session hope you have understood the solution of this question.