If you see a rectangular table from the top, then you will find that there are ___ pair of parallel line segments and _____ points of intersection.
If you see the top of a table, then you will find that there are ___ pair of parallel edges and _____ points of intersection of edges.
The edges of the top of a rectangular table form ___ pairs of parallel lines and intersect at _____ different points.
The edges of the top of a rectangular table form ___ pair of parallel lines and intersect at _____ different points.