Ans. In geometry part of a line bounded by two endpoints is known as a line segment. In the case of a quadrilateral, one can witness mostly three such segments. Firstly, when the two diagonals of any convex quadrilateral act as a line segment and connect opposite vertices of the quadrilateral. Secondly, two bi-medians of convex quadrilaterals connect midpoints of opposite sides. Thirdly, bisectors of any convex quadrilateral act as perpendicular to one of its sides and pass through the midpoint of opposite sides.