The edges of the top of a rectangular table form ___ pairs of parallel lines and intersect at _____ different points.
2,4
In above table, sides AB ll CD and AD ll BC.
So, there are two pairs of parallel lines in the rectangular table.
A is the point of intersection of lines BA & AD.
B is the point of intersection of lines AB & BC.
C is the point of intersection of lines BC & CD.
D is the point of intersection of lines AD & DC.
Hence they intersect at 4 different points.