 and welcome to the session I am Deepika here. Let us discuss the question named the type of quadrilateral formed if any by the following points and gave reasons for your answer. Points are minus 3, 5 and 3, 1, 0, 3 and minus 1, minus 4. So before solving this question let us recall the types of quadrilateral, if sides are equal and diagonals are not equal and a quadrilateral is a rectangle, if opposite sides are equal we will prove that it is all sides are equal and diagonals are not equal and for sphere also let us start the solution minus 1 minus 4 with our given points. This is formula distance a v is equal to 3 square 36 which is equal to root 52 this is again equal to 2 root which is bc is equal to of 0 minus 3 square 1 square is equal to 9 plus 4 is equal to root 13 and minus 0 square minus c square this is equal to 1 14 is equal to root 55 root 2 equal to equal to which is equal to equal to 0 plus c square minus 5 square this is equal to root 13 since bd is equal to c square so this is equal to 16 25 equal to root 41 cc root 13 is root 13 so bc plus cc is equal to root 13 13 this is equal to 2 root times the given 4 points because abc are collinear they lie on the same line but the question is no quadrilateral, quadrilateral cannot be formed in this case. I hope the question is clear to you why and enjoy yourself.