Mid line segment.
no only one
A trapezoid is a 4 sided quadrilateral with a pair of opposite parallel lines of different lengths.
No, it can only have one midpoint, because if it had two midpoints, then there would be two line segments! Also, if you add two midpoints, then thus creating another segment.
A segment that connects two midpoints of a polygon.
No. A line segment can have only one midpoint.
because a line segment is just pionts